[填空题]Why is an insect dangerous when it is wetted by liquid It is because of ______ .

[单项选择]

Conversation 1

What did Mr. Brown do when Miss Li rang him up （）
A. He went to a park.
B. He had a talk with Conrad.
C. He talked about the contract.
D. He went out for a walk.

[单项选择]When will Mr. Li return

[单项选择]Why were they disappointed when the film started（　）.
A. Because the film started late.
B. Because the second of the two films which they were not interested in was shown first.
C. Because they couldn’t see the film clearly.

[简答题]One might ask why speculation is permitted when there is so real a danger of loss. The basic reason is that speculation can perform useful functions in the market equilibrium and encourages faster entry of more suppliers, ff the price change lagged until after an actual commodity shortage had occurred, the fluctuation would probably be sharper and more sudden. Remedial supply action could not be further delayed. Similarly, if speculators foresee a surplus in some commodity, their selling of futures will help drive the price down to some extent before the surplus actually occurs. When speculators foresee a shortage and bid up the price, they are also helping to conserve the present supply. As the price goes up, less of the commodity is purchased; a rib in price encourages users to economize. Similarly, a lowering of price encourages users to buy more, thus helping to sell the surplus which is developing.

[填空题]Why was the doctor surprised when Miss Green came to see him again

[单项选择]
Why do some people feel guilty when they drink coffee
A. They are not allowed to drink coffee.
B. They think coffee does no good to them.
C. They think coffee is too expensive.
D. They should not drink coffee when working.

[单项选择]Why does the speaker think some students don’ t like history
A. History teachers don’t care.
B. Students are too lazy.
C. The professors don’ t make it interesting.
D. Students think history is not important.

[单项选择]Why was Eve worried when she went to Kennedy Center（）
A. She was in a casual dress.
B. She had no concert ticket.
C. She had no money with her.
D. She found a lot of people there.

[填空题]Why was the doctor surprised when he saw Miss Green again Because she wasn’t ______.

[填空题]Why should we keep some points in mind when writing e-mail Due to the ease of use, it has the potential to be ______ .

[单项选择]We don’t know why so many people in that region like to wear dresses of such（）colors.
A. low
B. humble
C. mild
D. dull

[单项选择]Why did Michael cry uncontrollably when he skimmed over the newspaper article（）
A. Such misfortune should have fallen on him.
B. It reminded him of his miserable childhood.
C. He did not understand his father till too late.
D. The reported hero turned out to be his father.

[单项选择]