1 . You will be surrounded by evidence of four different groups of people who took over at different times throughout history. (英译汉)
_______________________________________________________________________________

2 . These bad habits, if left unchecked, could lead to more serious ones when they become adults. （英译汉）
_______________________________________________________________________________

3 . 她受到网友的启发，决定成立一个IT俱乐部来教年长一些的人们学习使用电脑和互联网。
She _________ the people she met online that she decided to start an IT club to teach older people how to use computers and the Internet.

4 . 只有学会和大自然和谐共处，我们才不会成为野生生物和地球的威胁。
_________ we learn to _________ wildlife and to our planet.

5 . 然而，政府并没有打算停止这些保护项目，因为对藏羚羊的威胁依然存在。
The government, however, does not _________ stop the protection programmes, _________ the threats to the Tibetan antelope have not yet disappeared.

6 . 新旧更替的时代已经到来，在走向未来的过程中，我们不可能将过去的一切都保存下来。
_________ the old must _________ the new, and it is not possible to preserve everything from our past as we move towards the future.

7 . First of all, there is the golden rule of the Internet: If you see or read something ______ makes you feel uncomfortable, leave the site immediately. (用适当的词填空)

8 . ______is known to all, Tsinghua University is one of the top universities throughout the world. (用适当的词填空)

10 . What matters to him is________ the job allows him to pursue his further study or not. (用适当的词填空)