题目内容：

词汇。

根据汉语意思完成英文句子。

1.微波炉可以用来煮饭。

A microwave oven can _____ _____ _____ cooking.

2.到目前为止，我们的政府已经采取了许多措施来解决环境问题。

___________ _____________ our government has taken many measures to deal with the environmental problems.

3.人类怎么会说这么多种语言，这种情况是如何产生的呢？

How did it _____ _____ that humans speak so many different languages?

4.不吃早餐去上学对我们的健康有害。

Going to school without breakfast _____  _____ _____ our health.

5.世界上三分之二的科学家用英语阅读。

________ _________ of the world’s scientists read in English.