Why does the author compare rain forests with coral reefs？
A. Because they are approximately the same size.
Because they share many similar species.
C. Because most of their inhabitants require water.
D. Because both have many different forms of life.
查看答案
【B3】
A. recently
B. completely
C. immediately
D. regularly
The author argues that there is more diversity of life in the sea than in the rain forests
A. more phyla and classes of life are represented in the sea
B. there are too many insects to make meaningful distinctions
C. many insect species are too small to divide into categories
D. marine life-forms reproduce at a faster rate
收集、贮存危险废物()。
A. 应根据场所的情况统一处置
B. 必须按照处置场所分类进行
C. 必须按照危险废物特性分类进行
D. 应根据危险废物贮存设施，混装运输
What is the main idea of this passage？
A. Dropping in fat consumption attributes to obesity.
B. A new theory of obesity—a diet affecting brain chemistry.
C. The obesity gene in humans was found half a decade ago.
D. Explosion of obesity can be controlled.
微信支付 
支付宝支付