单词拼写（已给出首字母或中文意思）。

1. We call the children between thirteen and nineteen t_______.

2. Just c________ down a little bit and everything will be all right.

3. Don't i________ small mistakes. They may cause big accidents.

4. Sandy found himself e_______ lost in the strange country.

5. When you have a high fever, you will probably s_______ a headache.

6. Please draw the c_______; the sunlight is too bright.

7. I saw a _______ (积满灰尘的) old book on my shelf by chance.

8. Though its structure is somewhat _______ (松散), the novel is not bad.

图中的水利工程沟通了

A．长江与黄河

B．黄河与海河

C．长江与淮河

D．长江与珠江