7.(n. ) 志愿者

8. (adj.) 必要的；必需的

9. (n.) 知識(shí)；學(xué)識(shí)

4. (n.) 化學(xué)

5. (n.) 能量;能源

6. (n.) 實(shí)驗(yàn)

1. (n.) 展覽；展覽會(huì)

2. (v.) 懲罰；懲處

3. (n.) 物理學(xué)

5. 我的爸爸和媽媽都是教師。

my father mother are teachers.

4. 當(dāng)我爸爸進(jìn)來(lái)的時(shí)候我即將做我的作業(yè)。

I do my homework when my father came in.

3. ——下周我們將去遠(yuǎn)足。

—-我們也去。

—We will go hiking next week.

—So we.

2. 他們一家很不幸，母親死于癌癥，父親在一場(chǎng)車(chē)禍中遇 難。

Their family was very unlucky;his mother the cancer;his father a traffic accident.

1. 無(wú)論她做什么都是對(duì)的。

she was right.

5. Laptops are smaller and lighter they can be carried very easily.

   A. in order to   B. because

   C. so that   D. as if

4. (2014 •河北中考) When you are swimming,your ears. You can use earplugs (耳塞) to stop water getting into your ears.

   A. take after   B. take part in

   C. take off   D. take care of