() 1. We do believe the greenhouse effect does to our environment. A. harmful B. harmless C. harm D. harms 题目和参考答案——青夏教育精英家教网—

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() 1. We do believe the greenhouse effect does to our environment.

A. harmful B. harmless C. harm D. harms

1.C

题目来源：通城学典每课一练课时作业本八年级英语下册译林版 > Test 8

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