Ⅰ.单词语境记忆——根据汉语提示写出单词的适当形式
1．I want to be an astronaut (宇航员)，traveling to the moon in a spacecraft.
2．Police insist that Michael did not follow the correct procedure (程序，步骤) in applying for a visa.
3．Poor housing and family stress can affect both physical and mental (精神的) health.
4．Early astronomers thought that our planet was the centre of the universe (宇宙)．
5．The satellite (人造卫星) enables us to calculate their precise location anywhere in the world.
6．He made determined (意志坚定的) efforts to overcome all the difficulties.
7．A series of technical foul－ups delayed the launch (上市) of the new product.
8．These youngsters are motivated not by a desire (渴望) to achieve，but by fear of failure.
9．Air pollution is not new and has been ongoing (持续存在的) for a number of years.
10．Anything with strong gravity (重力) attracts other things to it.
