2 . They had moved across a land bridge between the two __________(continent). (所给词的适当形式填空)

3 . Poems that are easy to understand are often less interesting than those that constantly reveal deeper and __________ (previous) unrecognized meanings. (所给词的适当形式填空)

4 . One day, you will find that these tools can then assist you with a ________(解决方法) of the problem. (根据汉语提示单词拼写)

5 . This new technology will make a great __________ (贡献) to the development of Chinese communication industry. (根据汉语提示单词拼写)

6 . __________(幸运的是), more and more people come to realise the harm of smoking and begin to stop it. (根据汉语提示单词拼写)

7 . No scientists can exactly figure out what happened on the earth at that time, which caused the ____________(n.灭绝) of the dinosaurs. (根据汉语提示单词拼写)

8 . There is no doubt ______ the suggestion he puts forward at the meeting is practical. (用适当的词填空)

9 . His failure in the test made him aware _______ the importance of reviewing the lessons. (用适当的词填空)

10 . The buildings as well as the artworks of the Forbidden City are well preserved by __________(profession) staff.(所给词的适当形式填空)