有关研究显示,物种之间的相互影响十分紧密。一个物种的消失,一般可影响5到20个物种的功能与生存。每一种鸟类的消失,都将有大约90种昆虫、35种植物、2到3种鱼类随之灭绝。每两种鸟类消失,则必然会有一种哺乳动物随之灭绝。这说明
An explosion blew the roof off an unstable reactor north of Tokyo, ____ fears of a disaster at a nuclear plant ____ in the massive earthquake that hit Japan.
All of us have the desire to visit the three main temples in Athens, especially _______ contains a gold and ivory statue of Athena.
Each member country of WTO must its laws and regulations and complete on the principle of fairness and cooperation.
In my opinion, only in this way _________ the problem.
My friend told me it would be months _________ his family settled down in that city.