[单项选择]On a small farm in a dry climate one should not grow crops that need ___________ space and a lot of water to ripen.
A. considerable
B. significant
C. extensive
D. expensive

[单项选择]Small green plants are very important to dry places because ______.

[单项选择]According to the passage, the dynamics of small group economies differ from those of large group economies in that
A. (A) the members of small groups tend to have a greater degree of social regularity than the members of large groups
B. (B) people in small groups carry an advantage in the arena of exchange because they are tied by social obligation
C. (C) the manufacturer of a commodity in a small group economy is more likely to be known by the members of the group
D. (D) the people who contribute to the production of a gift are less essential to small groups than those who exchange commodities are in large groups
E. (E) a system of social obligation diminishes the number of parties necessary to a gift-giving transaction

[单项选择]To solve the problem of dry mouths, one is advised to take cool milk.

[单项选择]

Passage One
Wild and farm birds often get a flu virus. Yet they usually are able to carry the virus without getting sick.
In 1997 six people in Hong Kong died of a different kind of bird flu virus. It is called the h-five-n-one virus. The Hong Kong government quickly ordered the killing of all farm birds there. That stopped the spread of h-five-n-one to people in Hong Kong.
Yet the virus bad already spread to other parts of Asia. It was found in 16 countries between 2003 and 2006.
The h-five-n-one virus first appeared in Africa. This raised many concerns about the spread of the disease. Scientists do not know exactly how bird flu came to Africa. At first, they thought wild birds were to blame. Now, officials with the U. N. Food and Agriculture Organization believe the main cause is trade in farm birds.
The bird flu virus is found in the waste and liquids of infected birds. The virus spreads when healthy birds or people touch sick bir
A. wild and farm birds
B. a fin virus
C. bird flu
D. infected birds

[单项选择]Nobody can deny the fact that he was one of the greatest writers in his times.（）
A. 任何人都不能否认事实上他是他所在时代最伟大的作家。
B. 事实上他在有生之年已成为最伟大的作家，没人能够超过。
C. 他是那个时代最伟大的作家之一，这一点没有人能否认。
D. 任何人都无法拒绝承认他在世时是最伟大的作家之一这一事实。

[单项选择]

Passage One
The humorous story may be told to great length, and may wander around as much as it pleases, and arrive nowhere in particular; but the comic (滑稽的) story and the witty (诙谐的) story must be brief and end with a point. The humorous story continues gently along, the other two burst.
The humorous story is strictly a work of art--high and delicate (精美的) art--and only an artist can tell it; But no art is necessary in telling the comic and witty stories; anybody can do it. The art of telling a humorous story--I mean by word of mouth, not print--was created in America, and has remained at home.
The humorous story is told seriously; the teller does his best to hide the fact that he himself even suspects that there is anything funny about it; but the teller of the comic story tells you beforehand that it is one of the funniest things he has ever heard, then tells it with eager delight, and is the first person to laugh.
When he gets through,
A. laughs at his own joke
B. repeats it several times
C. is very serious when he tells it
D. is concerned about the reaction of his listeners