网址：http://m.1010jiajiao.com/timu3_id_3221133[举报]
Trees are useful to man mainly in three ways, the most important of which is that they can protect ______ from droughts (干旱) and floods.
A. it B. itself C. himself D. him
查看习题详情和答案>>PART TWO: LANGUAGE KNOWLEDGE
Section A
Directions: Beneath each of the following sentences there are 4 choices marked A, B, C and D. Choose one answer that best completes the sentence.
21. Trees are useful to man mainly in three ways, the most important of which is that they can protect ______ from droughts (干旱) and floods.
A. it B. itself C. himself D. Him
查看习题详情和答案>>
PART TWO: LANGUAGE KNOWLEDGE （45分）
Section A （15分）
Directions: Beneath each of the following sentences there are 4 choices marked A, B, C and D. Choose one answer that best completes the sentence.
21. Trees are useful to man mainly in three ways, the most important of which is that they can protect ______ from droughts (干旱) and floods.
A. it B. itself C. himself D. Him