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4.Because it lacks water, this makes the area known as Death Valley a desert, but it is by no means devoid of life.

　　(A) Because it lacks water, this

　　(B) They lack water, which

　　(C) Water, the lack of which

　　(D) Lacking water, it

(E) Lack of water

5.Jean Piaget, a Swiss psychologist, and the first scientist that madesystematic studies of how children learn.

　　(A) Jean Piaget, a Swiss psychologist, and the first scientist that made

　　(B) Jean Piaget was a Swiss psychologist, also the first scientist making

　　(C) As a Swiss psychologist, it was Jean Piaget who was the first scientist making

　　(D) Swiss psychologist Jean Piaget, the first scientist in having made

(E) The Swiss psychologist Jean Piaget was the first scientist to make

6.Rita Dove, African American writer and teacher, as poet laureate of the United States from 1993 to 1995.

　　(A) Rita Dove, African American writer and teacher, as

　　(B) Rita Dove was an African American writer and teacher as

　　(C) African American writer and teacher Rita Dove was

　　(D) African American writer and teacher, Rita Dove was

(E) An African American writer and teacher, it was Rita Dove

EXPLANATION:

4.The correct answer is E

Choice (E) is correct. It avoids the awkwardness and wordiness of the original by making “Lack of water” the subject of the sentence.

5.The correct answer is E

Choice (E) is correct. It avoids the sentence fragment error of the original by providing a main verb, “was,” to express a complete thought.

6.The correct answer is C

　　Choice (C) is correct. It avoids the sentence fragment error of the original by providing a main verb, “was,” for the subject of the sentence, “Rita Dove.”

延伸阅读：

SAT写作技巧——常识篇

SAT写作技巧——前期准备

SAT写作技巧——正式书写

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