We have to ______ everything question in...

 It is clear that no use can be made ______radium _____we don’t know clearly the characteristics of it.

 From my point of view, the theory that ______ by the scientist is not quite scientific.

The invention of steam engine greatly sped up the industrial revolution, which _____ a lot to the take-off of the world.

 以Nature为题写一篇100词左右的英语短文。要点如下：

1. 简述人类对大自然的依赖。

2. 随着人类的发展，生态平衡遭到破坏，人类生存的环境受到严重污染。人类正在受到大自然的惩罚。

3. 我们要善待自然，自然也会关照我们。

注意：内容可适当增减，但不可逐字翻译。

Nature

此题要求改正所给短文中的错误。对标有题号的每一行做出判断：如无错误，在该行右边横线上划上一个（P）；如有错误（每行只有一个错误），则按下列情况改正：

此行多一个词：把多余的词用斜线（\）划掉，在该行右边横线上写出该词，并也用斜线划掉。

此行缺一个词：在缺词处加一漏字符号（Λ），在该行右边横线上写出该加的词。

此行错一个词：在错的词下面划一横线，在该行右边横线上写出改正后的词。

注意：原行没有错的不要改。

　　Last Saturday, I wanted very much to see a film

together with my brother after supper. On my way           51. _____

to the cinema, we happen to meet an American              52. _____

named Peter, who had lost his way, looked worried.          53. _____

When he told us that he wasn't able to find                 54. _____

the hotel, we decided take him there. When we went         55. _____

to the hotel, we told of Peter the great changes              56. _____

that had taken place in our country in the past few year,       57. _____   

and he told us a lot of things about the youths in the U.S.A.

Although my brother and I missed a interesting          58. _____

film, we felt very happily, for we had not only helped        59. _____

Peter out of trouble and also learnt something from him.      60. _____