A.從方框中選擇正確的詞,并用其適當(dāng)?shù)男问教羁眨?br/>（change , use , few , realize , die）
1.Humans have come【to realize 逐漸意識(shí)到】that animals areimportant to us
2.So far , humans 【has changed 改變了】our planet in many ways .
3.Many kinds of animals and plants are 【dying絕種】out these years .
4.The government has done something【useful 有用的】to protect the environment
5.Because of the pollution , animals become fewer and 【fewer越來(lái)越少】