6. add vt. 增加，添加，補(bǔ)充說

5. throughout prep. 遍及，貫穿

4. teenager n. (13--19歲的)青少年

3. press vt. & vi. 按，壓，逼迫

2. absolutely adv. 絕對地，完全地

1. agreement n. 一致，協(xié)定

7. Steve Jones tries to keep animals and plants from becom- ing endangered.　　 表示“阻止某人做某事”

☆重點(diǎn)詞匯☆

6. We may be able to take measures before it is too late.

before 的譯法

5. We human beings could not survive without all plants and animals around us.　　 表雙重否定

4. The cell phone helps her do whatever she wants to do.

whatever 引導(dǎo)的名詞從句