The rivers will become dirtier and dirtier we take action to protect them.A. since B. ifC. until D. unless 题目和参考答案——青夏教育精英家教网—

题目内容

The rivers will become dirtier and dirtier ______ we take action to protect them.

A. since B. if

C. until D. unless

练习册系列答案

寒假作业中国地图出版社系列答案

中考复习攻略南京师范大学出版社系列答案

相关题目

his eyes the sun , he wears a pair of sunglasses .

A. To protect ; from B. To protect ; away C. Protecting ; from D. Protecting ; away

阅读短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。

My name is Daisy. I live 1. my parents in an apartment(公寓)．The apartment is on the sixth floor of a tall building. There 2. (be) fourteen floors and a car park in the basement(地下室). My father parks(停放) his car there.

Our apartment isn't in the center 3. the city.Do you know 4. far it is from the center? It's five 5. (kilometer) from the center. My father works in the city, 6. he goes to work 7. bus every morning. It takes him twenty minutes 8. (get) there. He doesn't 9. (drive) his car. He uses(用) his car only on weekends. Then he 10.takes (take) us to the country or to the beach(海滩)．

people are very interested in watching the football match.

A. Thousands of B. Two thousands

C. Thousand of D. Two thousand of

The young man came driving full speed down the road in his car. it was!

A. How dangerous the scene B. What dangerous a scene

C. How a dangerous scene D. What a dangerous scene

A large number of Hollywood movies ________ in China every year. The number of imported (进口) Hollywood movies in 2014 ________ 34.

A. are shown; is B. are shown; are C. is shown; is D. is shown; are

The best things in life are __________，such as(例如) the clean air and sunshine we have in Yunnan.

A. free B. old C. expensive D. new

— Excuse me, could you tell me where ________?

— Sure, sir. You can try www.taobao.com.

A. can I join in the group-buying

B. did I join in the group-buying

C. I can join in the group-buying

D. I joined in the group-buying

—How do you learn English?

—I learn English ___________ practicing conversations.

A. on B. in C. of D. by

试题分类