Unit 5 Into the unknown

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Section Ⅰ Starting out & Understanding ideas

单词拼写 根据首字母或汉语提示，用本部分所学单词的正确形式填空。

1.Landing on Mars may inspire more people to learn about science and a .

2.My brother b himself in his studies when in high school and as a result he entered his ideal university.

3.A c is a human society with its own social organisation and culture.

4.Those suggestions shouldn’t be d without thinking about them.

5.The two （运河） have proved useful to the county in many ways.

6.One dead man was found in the （废墟） almost two hours after the explosion.

7. （离弃） a child under two years old is a crime.

8.The remarkable （扩大） of public high schools from 1900 to 1920 was very important.

选择填空 用方框中所给短语的适当形式填空。（剩余26350字）