6. We may blame ...,but the real causes are...
7. Part of the explanations for it is that ...
One of the most common factors (causes ) is that ...
Another contributing factor (cause ) is ...
Perhaps the primary factor is that …
But the fundamental cause is that ...
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摘要：社会在追逐潮流，学校里也已蔚然成风。大家会蜂拥而起模仿领军人物的所作所为，以为那就叫“个...
摘要：考研英语作文范文--人口问题 Directions: A. Study the following graphs carefully and write ...
作文地带导读：2012年考研英语作文精选背诵 The theory of plate tectonics describes the motions of...