However, when we look at the 100 billion stars in our galaxy (the Mil

1.4.1.1 However, [when we look at（观察）the 100 billion stars (恒星）in our galaxy(银河)(the Milky Way),and 100billion galaxies（星系） in the observable Universe（可见宇宙）], it seems inconceivable(难以置信的)that at least one of these planets does not have a life form on it; [in fact], the best educated guess（最有根据的推测） (we can make)， [using the little (that we do know about the conditions for carbon-based life(碳基生命)) ], leads us to estimate that perhaps one in 100,000 stars(恒星） might have a life-bearing planet （孕育生命的行星）(orbiting it).Which of the following is the right description to the logical connection of the semicolon （分号） in the above-mentioned sentence? 选项： A、The semicolon is used to join two coordinating clauses. B、 The semicolon is used to separate the long sentence into two independent clauses. C、 The semicolon is used to explain the reasons. D、 There is no logical connection used here.

2.4.1.1 However, [when we look at（观察）the billion stars (恒星）in our galaxy(银河)(the Milky Way),and 100billion galaxies（星系） in the observable Universe（可见宇宙）], it seems inconceivable(难以置信的)that at least one of these planets does not have a life form on it; [in fact], the best educated guess（最有根据的推测） (we can make)， [using the little (that we do know about the conditions for carbon-based life(碳基生命)) ], leads us to estimate that perhaps one in 100,stars(恒星） might have a life-bearing planet （孕育生命的行星）(orbiting it). Which of the following is the right description to the logical connection of the semicolon （分号） in the above-mentioned sentence? 选项： A、The semicolon is used to join two coordinating clauses. B、The semicolon is used to separate the long sentence into two independent clauses. C、The semicolon is used to explain the reasons. D、There is no logical connection used here.

The Milky Way（银河）contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate（推算） to the rest of the stars that the telescope could not see.
The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.This is the first research finding about the planets with a chance for life. 选项： A:Right B:Wrong C:Not mentioned">3.共用题干So Many"Earths"
The Milky Way（银河）contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate（推算） to the rest of the stars that the telescope could not see.
The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.This is the first research finding about the planets with a chance for life. 选项： A:Right B:Wrong C:Not mentioned

The Milky Way（银河）contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate（推算） to the rest of the stars that the telescope could not see.
The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.The new finding is based on a thorough study of 170,000 stars in the Milky Way. 选项： A:Right B:Wrong C:Not mentioned">4.共用题干So Many"Earths"
The Milky Way（银河）contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate（推算） to the rest of the stars that the telescope could not see.
The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.The new finding is based on a thorough study of 170,000 stars in the Milky Way. 选项： A:Right B:Wrong C:Not mentioned

The Milky Way（银河）contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate（推算） to the rest of the stars that the telescope could not see.
The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.The Kepler space telescope has been in service for 15 years. 选项： A:Right B:Wrong C:Not mentioned">5.共用题干So Many"Earths"
The Milky Way（银河）contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate（推算） to the rest of the stars that the telescope could not see.
The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.The Kepler space telescope has been in service for 15 years. 选项： A:Right B:Wrong C:Not mentioned

6.One of the ____________things about life, for me, is that we have a choice in everything we do.______

7.Please scan Text A Unit 5 and finish the following table. The life attitude of most of us: Most of us take life for 1) ________. We know that one day we must die, but usually we picture that day as far in the 2) ________. When we are in good health, death is all but 3) ________. So we go about our pretty tasks, hardly aware of our 4) ________ attitude about life.

8.(　　)Passage 3 What do we talk about when we talk about money? We often think about what we can buy with the money we have, what we can't buy because we don't have enough and what we're planning to buy when we have more. We discuss the careers that bring us money and the expenses that take it away. We talk about our favorite shops and restaurants, the causes we support,the places we've been and seen. We share dreams that only money can make real. In short,we talk about everything but money itself. In daily life, money is still a major conversational taboo. This is a shame, because money is at least as interesting as the things it does and buys, and the more you know about it,the more interesting it is. As a financial adviser,I've seen hundreds of people learn to control their money instead of letting it control them and watched as they increased their freedom, power and security by handling money consciously. Wouldn't you like to know that you'll always have enough money to live exactly as you want to?You'll never be powerful in life until you're powerful over your own money. Talking openly about il is the first step.

9.65. Most of us have too many things to do in our life. Since time cannot be created, we need to make choices and make a plan. Planning is the key to relieving the stress of too little time. Plans can

10.Most of us take life for granted. We know that one day we must die, but usually we picture that day as far in the future. So we ______ our petty tasks, hardly aware of our listless attitude toward life. 选项： A: go for ; B: go over ; C:go with ; D: go about

11.Do we have to hold our English party in the classroom?---Well, I don’t know ______ if not here. 选项： A: when can we do it B: when we can do it C: where can we do it D: where we can do it

12.What are the advantages of space exploration?选项： A:It gives us more information about our solar system, galaxy, and universe.; B:Our efforts to solve critical problems to create opportunities can make life better here on our planet at the same time.; C:Space exploration provides us access to new raw materials.; D:Space exploration gives us a different perspective, which allows us to look at our planet in a different way.

13.We have to ____________ the fact that not all things are satisfactory in our life.

14.The one thing we need to be alert about the Internet is ____________.选项： A:to live our real life with a virtual identity; B:not to let the virtual life online dominate our real life; C:to accept whatever information coming to us; D:to stop using it since it is doing harm to us

15. Do you need friends? I'm sure your answer is “of course. Everybody does!” You need friends when you play and when you work. If you have friends, you will feel happy. If you have no friends, you will feel lonely. Do you know how to make friends? There is only one good way - You make friends by being friendly. A friendly person is interested in other people. He is always helpful. If you want to make friends with a new classmate, you can talk with him, tell him about the other classmates in your class and try your best to be helpful to him.We need friends __________. 选项： A、 Because we must play with them B、 when we play and when we work C、 when we are in trouble

16. Do you need friends? I'm sure your answer is “of course. Everybody does!” You need friends when you play and when you work. If you have friends, you will feel happy. If you have no friends, you will feel lonely. Do you know how to make friends? There is only one good way - You make friends by being friendly. A friendly person is interested in other people. He is always helpful. If you want to make friends with a new classmate, you can talk with him, tell him about the other classmates in your class and try your best to be helpful to him.We need friends __________. 选项： A、 Because we must play with them B、 when we play and when we work C、 when we are in trouble

17.We have to overcome a lot of ______ to make our life better.

18.Do you need friends? I’m sure your answer is “Yes, of course. Everybody does!” You need friends when you play and when you work. If you have friends, you will feel happy. If you have no friends. you will feel lonely. Do you know how to make friends? There is only one good way — You make friends by being friendly. A friendly person is interested in other people. He is always helpful. If you want to make friends with a new classmate, you can talk with him, tell him about the other classmates in your class and try your best to be helpful to him. We need friends ______. 选项： A: because we must play with them B: Because we must work with them C: when we play and when we work D: when we talk with them

19.According to the first paragraph, which of the following statements is NoT true? 选项： A:We may make mistakes when making a public speec B: Most of us don't know how to make a good public speec C:Every one of us hopes to have the chance to speak in publi D:We may think that we can never make a good speech.