[单项选择]Why might the man miss the program（）
A. His boss might ask him to stay up late.
B. The woman will record tonight’s program.
C. He may have to prepare for tomorrow’s business trip.
D. He will be having a meeting with his boss at that time.

[单项选择]Why might the man join the co - up
A. To save money on food.
B. To buy food without additives.
C. To do all his shopping in one place.
D. To meet other health - conscious peopl

[单项选择]Why did the man miss the news report
A. He was working overtime.
B. He was attending to some chores.
C. He was at a social event.
D. He was on his way home.

[填空题]In which program did Miss Li apply for graduate study
She applied for graduate study in ______ .

[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.

[单项选择]Why didn’t the man miss his train
A. Yellow.
B. Green.
C. Blue.