A 20% increase in the price of milk leads to a 10% decrease in the qua

1.If cross-price elasticity of demand between two goods is positive, the two goods are:选项： A:normal.; B:substitutes.; C:inferior.; D:complements.

2. If the cross-price elasticity of demand for two goods is negative, these two goods are? 选项： A、 Luxury goods. B、 Necessities. C、 Substitutes. D、 Complements.

3.Suppose the cross-price elasticity of demand is a negative number. We know that 选项： A、the two goods are complements. B、the two goods are substitutes. C、 the two goods are inferior goods. D、the two goods are normal goods.

4.Suppose the cross-price elasticity of demand is a negative number. We know that 选项： A、a. the two goods are complements. B、b. the two goods are substitutes. C、c. the two goods are inferior goods. D、d. the two goods are normal goods.

5.A positive sign on cross-price elasticity of demand indicates that the two products are 选项： A:

complements.

substitutes.

necessities.

independent.

luxuries.

6.If two goods are substitutes, their cross-price elasticity will be选项： A:negative.; B:zero.; C:positive.; D:equal to the difference between the income elasticities of demand for the two goods.

7.If the cross-price elasticity of demand between blueberries and yogurt is negative, then the two goods are:A.complements.B.substitutes.C.inferior goods.D.normal goods.

8.Suppose the price of Coca-Cola increases from $1.00 per bottle to $1.30 and the quantity of Pepsi purchased increases from 1000 to 1210 bottles. Which of following statements regarding to cross elasticity of demand (XED) are wrong?（）选项： A:

The cross elasticity of demand is 1, they are perfect substitutes.

B:

The cross elasticity of demand is 0.7, they are highly substituted.

C:

The cross elasticity of demand is - 1, they are perfect complements.

D:

The cross elasticity of demand is -0.7, they are high complementary.

9.The cross-price elasticity of electricity with respect to the price of natural gas has been estimated as being equal to 0.2. This implies that: 选项： A、natural gas and electricity are both normal goods. B、electricity and natural gas are complements. C、electricity and natural gas are substitutes. D、one of the two goods is inferior while the other is normal, but we need additional information to determine which of them is inferior.

10.1992年12月，联合国决定将每年的（）确定为“国际消除贫困日” 选项： A:

2023–03–21

B:

2023–04–22

C:

2023–07–11

D:

2023–10–17

11.（）is one of functions in logistics, which can deliver goods to customer directly by order in the most economic way. 选项： A:

Transportation

B:

Distribution

C:

Sending goods

D:

Carrying goods

12.The terms for a Senator and Representative are ____ and _____ years respectively. 选项： A:

two,four

B:

two,three

C:

two,six

D:

six,two

p"); 结果:（）选项： A:[

two

one

three

two

one

two

three

jQuery 代码: $("div > p"); 结果:（）选项： A:[

two

] B:[

one

] C:[

three

] D:[

two

]

p"); 结果:（）选项： A:[

two

one

three

two

one

two

three

jQuery 代码: $("div > p"); 结果:（）选项： A:[

two

] B:[

one

] C:[

three

] D:[

two

]

15.If two goods are substitutes, then an increase in the price of one of them will increase the demand for the other.

16.【单选题】Which of the following clauses is appropriate for a contract of sale by sample?

选项： A:

A、"The quality of the goods delivered should be the same as the quality of the sample."

B:

B、"The quality of the goods delivered should be equal to the quality of the sample."

C:

C、"The quality of the goods delivered should be about equal to the quality of the sample."

D:

D、"The quality of the goods delivered should refer to the quality of the sample."

17.Which one is better?

A、We have begun to export goods.

B、We have begun to export goods to the countries abroad.

18.Which two transport layer protocols carry syslog messages?(choose two) 选项： A:

ARP

B:

RTP

C:

IP

D:

UDP

E: TCP

19.假设需要查询一张商品表，并且设置了别名，下列哪个sql是错误的:() 选项： A:

select no as 编号goods as 商品number as 数量price as 价格from sale_log

B:

B.select no 编号goods商品number数量price 价格 from sale log

C:

select (no,goods,number,price)as(编号,商品，数量，价格) from sale log 距离掌握

D:

select no as“编号goods as商品numberas数量priceas价格from sale log

20.Goods, such as fruits and flowers are ____. 选项： A:

deteriorating

B:

perishable

C:

decaying

D:

rotten

21.2、Which is not to describe the characteristic of a bargaining situation? 选项： A:

conflict between parties

B:

two or more parties involved

C:

an established set of rules

D:

a voluntary process

22.He said that he would travel abroad............... 选项： A:

now

B:

the following year

C:

two years before

D:

two years ago

23.【单选】现需要查询商品为两个字并且第一个字为饮商品的数量和价格，下列哪个sql是错误的选项： A:

select number,price from sale log where goods like'%饮%

B:

select number,price from sale log where goods like饮%

C:

select number,price from sale log where goods like'饮_’

D:

select number,price from sale log where goods like'_饮_’