March 20th is World Water Day every year. According to a report from the United Nations, more than half of the world's major rivers have serious water loss and are polluted.The Yellow River, the world's fifth longest river, watered some of the oldest farms on earth. But now it has a serious problem. _1._In most of the past 35 years, it didn't reach the sea.The Nile in Egypt, running 6, 650 km, is the longest river in the world. __2.__ Now it is down to 2 billion m' or so. Australia's Murray River reaches the sea only every other year. One fifth of America's Rio Grande has no water, either._ 3.__Mostly it's damming (筑壩) and global warming that make rivers dry.

_4._ Now about 45, 000 of them lie across the world's rivers. They hold back around 15% of the world's fresh water from running to the sea.Global warming is making things worse. Warmer weather takes water away. The glacier (冰川) are becoming smaller. _5.Global warming has had certain effects on water sources (源頭). Droughts (干旱) happening around the world make people pay more attention to this fact.

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：初中英語 來源：2014-2015學(xué)年山東龍口市九年級下期中考試英語試卷（解析版） 題型：單項填空

What do you want to ______ at the meeting ?

A.talk B.tell C.say D. speak

查看答案和解析>>

科目：初中英語 來源：2014-2015學(xué)年山東濟南市槐蔭區(qū)九年級階段性測試一模英語試卷（解析版） 題型：單項填空

My grandparents don’t like to live in the _______ city. They like the quiet countryside.

A. lazy B. salty C. angry D. noisy

查看答案和解析>>

科目：初中英語 來源：2014-2015學(xué)年山東濟南市槐蔭區(qū)九年級階段性測試一模英語試卷（解析版） 題型：單項填空

There are _______ foreign students in the class. Two are from the UK, three are from Australia and the other six are from Canada.

A. five B. eight C. eleven D. thirteen

查看答案和解析>>

科目：初中英語 來源：2014-2015學(xué)年山東濟南市槐蔭區(qū)九年級階段性測試一模英語試卷（解析版） 題型：單項填空

Our school is not far from the _______ / pɑ:k /?

A. pack B. pass C. park D. pick

查看答案和解析>>

科目：初中英語 來源：2014-2015學(xué)年山東德州慶云第二中學(xué)九年級下第一次練兵考英語試卷（解析版） 題型：閱讀理解

A teacher stood in front of his history class of twenty students just before handing out the final exam. His students sat quietly and waited for him to speak.

“It’s been a pleasure teaching you this term,” he said. “You’ve all worked very hard, so I have a pleasant surprise for you. Everyone who chooses not to take the final exam will get a ‘B’ for the course.”

Most of the students jumped out of their seats. They thanked the teacher happily, and walked out of the classroom. Only a few students stayed. The teacher looked at them. “This is your last chance,” he said. “Does anyone else want to leave?” All the students there stayed in their seats and took out their pencils.

The teacher smiled. “Congratulations (祝賀),” he said. “I’m glad to see you believe in yourselves. You all get ‘A’s.”

1.This story most probably took place_______ .

A. at the beginning of the term

B. in the middle of the term

C. at the end of the term

D. at the beginning of the school year

2.Most of the students got Grade ______.

A. ‘A’ B. ‘B’ C. ‘C’ D. ‘F’

3.Why did some students stay in their seats?

A. Because they wanted to take the exam.

B. Because the teacher told them to stay in their class.

C. Because they were afraid to leave.

D. Because they didn’t have anything to do.

4.The teacher gave the students who stayed in the classroom“ A”s because ______.

A. the teacher liked them

B. they were cleverer than the other students

C. they believed in themselves

D. they studied hard

5.The underlined word “them” in Paragraph 3 refers to “______”.

A. students staying in their seats

B. students leaving the classroom

C. their seats

D. all the students

查看答案和解析>>

科目：初中英語 來源：2014-2015學(xué)年山東德州慶云第二中學(xué)九年級下第一次練兵考英語試卷（解析版） 題型：單項填空

—I prefer speaking to listening in English learning.

—Oh, really! I think you should be good at ______ of them.

A. both B. neither C. some D. all

查看答案和解析>>

科目：初中英語 來源：2015年人教版初中英語九年級Unit 9練習(xí)卷（解析版） 題型：單項填空

His actions _______ his thoughts.

A.reflected B.effected C.affected D.rejected

查看答案和解析>>

科目：初中英語 來源：2015年人教版初中英語八年級下Unit 3練習(xí)卷（解析版） 題型：單項填空

Many parents find it difficult _______ with their children.

A.talk B.talked C.to talk D.talking

查看答案和解析>>

同步練習(xí)冊答案