[单项选择]Carbon, __ is a very important part of living things on the earth, is rare on the moon.
A. what
B. that
C. which
D. it

[单项选择]

People living on part of the south coast of England face a serious problem. In 1993, the owners of a large hotel and of several houses discovered, to their horror, that their gardens had disappeared overnight. The sea had eaten into the soft limestone cliffs on which they had been built. While experts were studying the problem, the hotel and several houses disappeared altogether, sliding down the cliff and into the sea.
Erosion (侵蚀) of the white cliffs along the south coast of England has always been a problem, but it has become more serious in recent years. Dozens of homes have had to be abandoned as the sea has crept farther and farther inland. Experts have studied the areas most affected and have drawn up a map for local people, forecasting the year in which their homes will be swallowed up by the hungry sea. 　　
Angry owners have called on the Government to erect sea defenses to protect their homes. Government survey ors have pointed out that in most cases, thi
A. The rising of the sea level.
B. The experts' lack of knowledge.
C. The washing-away of limestone cliffs.
D. The disappearance of hotels, houses and gardens.

[单项选择]Human skin is very thin on the eyelid and quite thick on the ______ of the foot.
A. sole
B. soul
C. base
D. basis

[单项选择]This cloth ______ very thin.
A. feels
B. touches
C. holds
D. handles

[单项选择]The little girl wore a very thin coat. A sudeen gust of cold wind made her ______.
A. whirl
B. shift
C. shiver
D. shake

[单项选择]The little girl wore a very thin coat. A sudden gust of cold wind made her ______.
A. shake
B. sweat
C. shiver
D. swing

[单项选择]When the child was （） milk, he became very thin and sick.
A. stopped
B. denied
C. forbidden
D. prevented

[单项选择]Living in the northern part of the country has its problems, ______ obtaining fresh water is not the least.
A. with which
B. for which
C. of which
D. which

[单项选择]Living in the western part of the country has its problems, ______ obtaining fresh water is not the least.
A. with which
B. for which
C. of which
D. which

[单项选择]Our living standard is still very low, but we are ______ living in poverty.
A. by all means
B. by no means
C. by every means
D. by means of