unit 5 Canada - the true north learning about language课时作业

　　Ⅰ.单句语法填空

　　1．The boy was completely absorbed ____________.

　　2．At ____________ time should we give up, facing difficulties.

　　3．This release them ____________ personal responsibility.

　　4．It's ____________ (legal) to read people's private letters without permission.

　　5．A new cinema ____________ (build) here now. They hope to finish it next month.

　　6．-What happened to the priceless works of art?

　　-They ____________ (destroy) in the earthquake last month.

　　7．The road ____________(repair) when we came last time.

　　8．According to the art dealer, the painting ____________ (expect) to go for at least a million dollars.

　　9．Hundreds of jobs ____________ (lose) if the factory closes.

　　10．This novel ____________(translate) into many languages since it was published.

　　Ⅱ.完成句子

　　1．晚上我们住在一个很偏远的小山村，没有机会上网。

　　At night we lived a remote mountain village, and ________________ the internet.

　　2．动物享有和人类同等的权力。

　　Animals have ________________ human beings.

　　3．她不能长时间专心读一本书。

　　She couldn't ________________ a book very long.

　　4．这些学校曾一度归教会主管。

　　________________ the schools were mainly attached to the church.

　　5．当他们走进森林时，他们不知道处于危险中。

　　When they walked into the forest, they didn't know they ________________.

　　Ⅲ.完形填空

　　Farmers use different kinds of soil conservation methods to protect their land from damage by farming and the forces of nature. One important form of soil conservation is the use of windbreaks. Windbreaks are barriers __1__ by trees and other plants __2__ many leaves. Farmers plant them __3__ around their fields. Windbreaks stop the wind from blowing soil away. They also keep the wind from destroying or __4__ crops. There have been studies __5__ on windbreaks in parts of West Africa. For example, they found that grain harvests can be twenty percent __6__ in fields protected by windbreaks compared __7__ fields without such protection.

However, windbreaks seem to work best __8__ they allow a little wind to pass through. If the wall of trees and plants stops wind __9__， then violent air motions will take place close to the