请用本单元所学短语的适当形式填空。

What he said at the meeting was a remark that ________　________ further discussion．

请用本单元所学短语的适当形式填空。

Don't ________　________ your old shoes, give them to me．

请用本单元所学短语的适当形式填空。

I visited several big cities ________　________ New York, Chicago, and Boston．

请用本单元所学短语的适当形式填空。

They ________ the failure of the action ________ George．

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．The introduction of foreign species is a global phenomenon which ________ negative ________　________ the conservation of native species and the integrity of ecosystems, having significant economic consequences．

2．About half of all invasive species are moved ________　________, such as insects that travel on your muddy shoes when you fly home from a holiday．

3．It took seven years and a great deal of money to finally ________　________　________ the invaders．

4．Today, however, lots of people travel long distances every day and this ________　________　________ the spread of undesirable species．

5．There are many easy ways in which people can ________　________．

6．________　________　________　________, inspections in countries such as the US are not as effective．

7．The issue first ________　________ widespread public attention in 1993．

8．But the legal action was dismissed because of ________　________ scientific and medical evidence．

9．But a study in Sweden several months ago found that cell phone users ________ two-and-a-half times ________　________　________ suffer brain tumors near the ear where the phone was used．

10．Some people have sharply criticized the cell phone industry and government officials for continuing to say the phones appear safe without knowing ________　________．

请根据下列提示写出相应内容。

1．issue n．________

2．debate n．＆v．________

3．federal adj．________

4．criticize v．________

5．现象n．________→(复数形式)________

请根据下列提示写出相应内容。

1．野生动植物n．________

2．输入，进口vt．________

3．choke n．＆v．________

4．muddy adj．________

请根据下列提示写出相应内容。

1．(物)种，人种n．________

2．检查，视察v．________

3．保持；保护v．________

4．结果；重要性n．________

请用本单元所学短语的适当形式填空。

“________　________!”the officer ordered his men, and he jumped at the thief running to him．

请用本单元所学短语的适当形式填空。

The health of the residents in the city ________ badly ________ by the polluted air．