题目内容
3.People plant________trees on the mountains every year.( )| A. | thousand | B. | thousands | C. | thousand of | D. | thousands of |
分析 人们每年在山上种数以千计的树木.
解答 答案 D
本题考察数词thousand与thousands of的区别,thousand用在前面有具体数词时,表示"千",如two thousand,后面不带of,排除A.,而thousands of前面无明确数字,表示"数以千计的","成千上万的",thousands必须是复数形式,排除B(没有带of),排除C(thousand不是复数形式),故选D
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