Researchers began dealing with the problem in 2000.They found that over a period of six years，planting three rows of trees reduced total dust and ammonia by more than half.And they found that smells were reduced by 18%.

　　Farmers may think trees will take too long to grow and be effective.But some trees can grow quickly.At least one－third of the Delmarva farms have planted trees，technically known as vegetative environmental buffers.The idea offers a way to cut pollution，save money and energy，and make the neighbors happy.

　　1．How does the new ventilation system work？(No more than 7 words)

　　________________________________________________________________________

　　2．What is the maximum capacity of poultry farms in Delmarva？(No more than 2 words)

　　________________________________________________________________________

　　3．What are the benefits planting trees can bring about？(No more than 11 words)

　　________________________________________________________________________

　　4．What is the best title of the passage？(No more than 10 words)

　　________________________________________________________________________

　　课后达标检测21

　　Ⅰ.单项填空

　　1．解析：选A。let out“泄露；一不留神说出”；take care“注意；小心”；make sure“确信；证实”；make out“辨认出来”。

【2016届高考英语二轮课后检测：21 Unit2 fit for life（牛津译林版）】相关文章：

★ 2014届高考英语一轮复习课时作业(三十)必修5Module 6《Animals in Danger》（外研版）

★ 2014届高考英语一轮复习课时作业(三十九)选修7Module 3《Literature》（外研版）

★ 2014届高考英语一轮复习必修4参考答案（外研版）

★ 2014届高考英语一轮复习课时作业(九)必修2Module 3《Music》（外研版）

★ （安徽专用）2014届高考英语一轮复习方案 作业手册（5）模块2 《Unit 5 Rhythm》（含解析） 北师大版必修1

★ 【三维设计】2017届高考英语（江苏专用）二轮复习课件：必修4 Unit 3《Tomorrow’s world》

★ 2017届高考英语二轮复习大题冲关秘籍短文改错：名校模拟（含解析）

★ 四川省2016届高考英语一轮复习课时作业（38） Module 2 Highlights of My Senior Year 外研版选修8

★ 2017届高考英语二轮复习课时训练：3（含解析）

★ 【三维设计】2017届高考英语（江苏专用）二轮复习课件：必修3 Unit 3《Back to the past》