[单项选择]One must keep calm in （　） time of danger.
A. a
B. the
C. that
D. /

[单项选择]One must keep calm in （　） time of danger.
A. a
B. the
C. that
D. /

[单项选择]We must keep in mind that all these events have nothing in common.
A. 我们务必记住，所有的这些事情都没有共同之处。
B. 我们务必记住，所有的这些事情都不普通。
C. 我们务必保证，所有的这些事情都没有共同之处。
D. 我们务必保证，所有的这些事情都不普通。

[单项选择]As a developing country, we must keep ______ with the rapid development of the world economy.


A. move
B. step
C. speed
D. pace

[单项选择]As a developing country, we must keep______ with the rapid development of the world economy.


A. move
B. step
C. speed
D. pace

[填空题]We must keep the manager (inform) ________of the advertising campaign.

[单项选择]The police must waste no time in ______ the escaped murderer in the forest.
A. searching
B. chasing
C. investigating
D. looking

[单项选择]The contracts must be renewed one week( )their expiration.
A. on
B. against
C. the moment of
D. before

[单项选择]D One moment it was quiet and calm in the forest, the next, the air was charged with tension. The elephant had heard the distant alarm calls of animals and her mood suddenly changed. I urged the elephant deeper into the forest. We sounded like a forest fire --- cracking, snapping, trailblazing. But through all the noise came a sharp warning cry. The elephant stopped and we heard it again --- the tell-tale call of a spotted deer. I looked quickly around the shadows of the forest. Rays of sunlight shone through tree branches, beneath which the patchwork（交错）of green plants and shadows-within-shadows would make tiger stripes（条纹）look more attractive. Apart from an occasional noise from the elephant’s stomach, the forest was silent. Gradually, the tension slipped from our bodies. The elephant seized a nearby branch and put it into its mouth. I reached forward and gently moved my hand over the elephant’s neck; there was a soft part, free of wrinkles and hairs, behind her ear.
A. The elephant stopped.
B. A spotted deer called.
C. The elephant seized a branch.
D. The forest was silent for a while.

[单项选择]If a farmer wishes to succeed, he must try to keep a wide gap between his consumption and his production. He must store a large quantity of grain (31) consuming all his grain immediately. He can continue to support himself and his family (32) he produces a surplus. He must use this surplus in three ways: as seed for sowing, as an insurance (33) the unpredictable effects of bad weather and as a commodity which he must sell in order to (34) old agricultural implements and obtain chemical fertilizers to (35) the soil. He may also need money to construct irrigation (36) and improve his farm in other ways. If no surplus is available, a farmer cannot be (37) . He must either sell some of his property or (38) extra fids in the form of loans. Naturally he will try to borrow money at a low (39) of interest, but loans of this kind are not (40) obtainable.

A. enhance
B. mix
C. feed
D. raise