请用本单元所学短语的适当形式填空。

I usually ________　________(抄近路)the park on my way to school．

请用本单元所学短语的适当形式填空。

Do you know when the earth ________　________　________(开始存在)？

请用本单元所学短语的适当形式填空。

The soldiers ________　________　________(装备有)the latest weapons．

以下是从本单元课文中摘出的原句。试试看，能填上吗？要注意词形变化！

1．It was so narrow and small that we had to be careful to ________　________　________．

2．She once gave a magic book to Yu the Great and helped him ________ the flood ________　________．

3．For years it has been a strong attraction to me, but ________　________　________ I had never actually climbed it．

4．When we finally found ourselves under the highest layer of clouds, ________　________ we had glorious views of hills which had a kind of unimaginable beauty．

5．The Great Wall is different from ordinary city walls ________　________ it extends itself continuously for miles and doesn't encircle a city．

6．The Chinese name Changcheng or“Long Wall”________　________　________ because of its length．

7．According to records ________　________ in Chinese literature, as many as 20 principalities and dynasties took part in constructing the Great Wall．

请根据下列提示写出相应内容。

1．吸引；吸引力n．________→吸引v．________→有吸引力的adj．________

2．美，美景n．________→美丽的adj．________→美化vt．________

3．不断地，连续地adv．________→不断的adj．________→继续v．________

4．文化的adj．________→文化n．________→(联想)农业________

请根据下列提示写出相应内容。

1．initially ________

2．dynasty ________

3．满意n．________→使满意v．________→令人满意的adj．________

4．历史的adj．________→历史n．________→历史性的adj．________

请根据下列提示写出相应内容。

1．文学，文献________

2．省________

3．符号，象征________

4．文明；文化________

请根据下列提示写出相应内容。

1．防护，防卫________

2．扩充，延伸________

3．存在，实在________

4．环绕，包围________

请根据下列提示写出相应内容。

1．不幸地________

2．陡峭的________

3．计划，方案________

4．建造，构造________

请根据下列提示写出相应内容。

1．实际上________

2．因此，所以________

3．同事，同僚________

4．印象________