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1. The Moon, which has undergone a distinct and complex geological history presents a striking appearance.

The word "undergone" is closest in meaning to which of following?

(A) altered

(B) substituted

(C) experienced

(D) preserved

2. It is now known that the vast majority of the Moon's craters were formed by the impact of solid bodies with the lunar surface.

The word "vast" is closest in meaning to which of following?

(A) special

(B) Known

(C) varied

(D) great

3. The term "latent heat" refers to the energy that has to be used to convert liquid water to water vapor.

The word "convert" is closest in meaning to which of following?

(A) mix

(B) change

(C) adapt

(D) reduce

4. In the atmosphere, a large portion of the Sun's incoming energy is used to evaporate water, primarily in the tropical oceans.

The word "primarily" in the line 19 is closest in meaning to which of following?

(A) chiefly

(B) originally

(C) basically

(D) clearly

5. Other species may become better adapted to an environment, resulting in competition and, ultimately, in the death of a species.

The word "ultimately" is closest in meaning to which of following?

(A) exceptionally

(B) dramatically

(C) eventually

(D) unfortunately

参考答案：

1 C

2D

3 B

4 A

5 C

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