It will be many years ______the doctors and medical scientists can find _____ for cancer.
|
A．since; cures |
B．when; treatments |
C．before; cures |
D．until; treatments |
We have to ______ everything question in detail ______ we take action.
A. conclude; before B. make analysis of; when C. expose; until D. analyze; before
It is clear that no use can be made ______radium _____we don’t know clearly the characteristics of it.
|
A．from; if |
B．of; unless |
C．from; unless |
D．of; if |
From my point of view, the theory that ______ by the scientist is not quite scientific.
|
A．was risen |
B．brought up |
C．had been raised |
D．was put forward |
The invention of steam engine greatly sped up the industrial revolution, which _____ a lot to the take-off of the world.
|
A．led |
B．contributed |
C．constructed |
D．exposed |
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
