More than two thirds of the world’s polar bears will be wiped out by 2050, according to a shocking new study. By then, scientists say, global warming will have melted 42 percent of the Arctic sea ice. By 2100, only a very few of these important creatures will be left.
The report has been produced by the US Geological Survey. The scientists have publicized their findings in the hope of influencing US Interior Secretary Dirk Kempthorne, who has been asked to put polar bears on the US endangered species list.
Polar bears depend on floating sea ice as a platform for hunting seals, which are their main food. Without enough ice, polar bears would be forced to go onto the land, where they are poorly skilled hunters, and would be unlikely to adapt to the life on the land in time. Experts say few little bears would survive and the stress could make many females unable to get pregnant.
The team of American and Canadian scientists spent six months studying bears, on the ground, from spotter planes and in the lab，using computer models. Some team members fear the result is even worse for the bears than what their report says. They say the Arctic is warming faster than anywhere in the world and much faster than their computer had been forecasting. Satellite observations have showed that the ice has decreased to an alltime low.
However, not everyone in the scientific community believes that global warming is happening on such an alarming scale. Another investigation has found that polar bears are still being hunted by wealthy “sportsmen” who want their skins and heads. At least ten international companies offer bearhunting trips.
1.What do we know about Dirk Kempthorne according to the passage?
A. He is an animal scientist.
B. He is a protector of animals working for the US government.
C. He was asked to put polar bears on the US endangered species list.
D. He offered to put polar bears on the endangered species list.
2.Why will polar bears die out if there is not enough sea ice?
A. Because polar bears can’t catch enough food without ice.
B. Because polar bears eat ice when they feel thirsty.
C. Because polar bears will be easily found by hunters without ice.
D. Because most female bears are used to giving birth under ice.
3.After a sixmonth study, some scientists fear that________.
A. there is something wrong with their computers
B. polar bears will disappear even faster than they ever expected
C. their computer models are not as accurate as they expected
D. global warming will destroy everything in the Arctic
假如你是李华，想邀请你的朋友John在周六晚上去观看科幻电影 The Wandering Earth，请用英语给他写一封邮件，内容包括:
1.发出邀请；
2.介绍电影(主题:保护人类共同的地球家园；观众评价等)；
3.请求回复。
注意:
1.词数100左右；
2.可以适当增加细节，以使行文连贯。
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假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除:把多余的词用斜线(＼)划掉。
修改:在错的词下划一横线，并在该词下面写出修改后的词。
注意:1.每处错误及其修改均仅限一词；
2.只允许修改10处，多者(从第11处起)不计分。
I'm delight to welcome you to our Wildlife Club.You’11 be surprised that a various of plants and creatures are living here.Here are the most visited tourist sites.
One of the pleasant place is Holland Common.This has been public land for two hundred of years，and that you’11 find interesting is that the River Ouse has its source in the Common.There’s information board about the plants and animals and the Common is accessibly 24 hours a day.Then there’s Holl Island which was noted for its great range of trees.It is open only from Friday to Sunday because it's quite small，but if there were people around every day，many of the wildlife would keep away.
Have a good time here!
阅读下面短文，在空白处填写1个适当的单词或括号内单词的正确形式。
The Hong Kong-Zhuhai-Macau Bridge(HZMB)，a 55-kilometre bridge-tunnel system，1. (consist)of a series of three cable-stayed bridges，an undersea tunnel，and four artificial islands.It is both the longest sea crossing and the longest fixed link on earth，another 2. (significance)project.The HZMB，3. connects Hong Kong，Macau，and Zhuhai-three major cities on the Pearl River Delta，crosses the Lingding and Jiuzhou channel.
The HZMB designed 4. (1ast)for 120 years was built with a cost of 126.9 billion yuan(US $18.77 billion).The cost of 5. (construct)the Main Bridge was estimated 6. 51.1 billion yuan(US $7.56 billion)shared among the governments of mainland China，Hong Kong and Macau.
7. (initial)set to be opened to traffic in late 2016，the structure was finally completed on 6 February 2018 and 8. (journalist)were subsequently given rides over the bridge.On 24 October 2018，the HZMB was opened to 9. public after its opening ceremony a day 10. (early)by Xi Jinping，General Secretary of the Communist Party of China.
There’s being a good neighbor，and then there’s going the extra mile.And in one Massachusetts neighborhood，the neighbors are pulling out all the stops.
Two years ago，about a ____ after Samantha was born，Glenda and Raphael Savitz learned their daughter was ____.“She was the first deaf person my husband and I had known，”Glenda，33，told the Boston Globe.“So it’s a surprise.____ .But I think I'm someone who’s ___ :OK.What do we do? She’s a week old.We’re going to be learning sign language.There was no ____ that it was going to be important to her development and her __ .”
But the Savitz family weren’t the only ones who learned how to sign.Over 20 residents of their neighborhood in the town of Newton are __ learning sign language.The residents ___ an instructor on their own and ___ gather together in a living room to learn the language.The neighbors’desire to learn to ____ with Samantha is something that the Savitz family finds extremely ____ .
“One of the most emotional __ having her is that I really learned about how much support and how much love there is here，”Glenda said.“People are ___ so much time and energy to learn a(n) ____ language because they’re dying to ____ my little girl.I don’t have __ for that.”
Baby Sam already has friends all over the neighborhood.Henry Marshall，a 19-year-old Harvard freshman，told the Globe that Sam ___ with her child-size basketball hoop ____ he shoots hoops on his adult-size one.While he plays，she copies his movements and ____ the words for“play”and“friend.”
“It’s a special neighborhood，”Raphael Savitz told the Globe.”It’s just a really ____place.”
1.A. day B. week C. year D. month
2.A. deaf B. blind C. hurt D. dull
3.A. Embarrassed B. Awesome C. Unbearable D. Unexpected
4.A. for B. against C. 1ike D. with
5.A. point B. chance C. question D. possibility
6.A. work B. study C. play D. growth
7.A. still B. also C. yet D. never
8.A. hired B. sent C. trained D. assisted
9.A. suddenly B. regularly C. immediately D. randomly
10.A. share B. stay C. associate D. communicate
11.A. interesting B. surprising C. touching D. demanding
12.A. results B. issues C. improvements D. experiences
13.A. 1ooking for B. giving up C. putting in D. relying on
14.A. oral B. foreign C. 1ocal D. useless
15.A. talk to B. turn to C. attend to D. adapt to
16.A. ideas B. words C. choices D. suggestions
17.A. plays B. 1ives C. helps D. deals
18.A. as B. unless C. until D. because
19.A. writes B. reads C. signs D. says
20.A. challenging B. important C. usual D. welcoming
To an outsider，any culture can seem confusing.And the UK's got a thing or two that raises a few eyebrows.However，understand the why and things might be less puzzling.1..
In a world where 61％of nations drive on the right，Brits drive on the left.Why? Most people think it goes back to Medieval，maybe even Roman times.2. when you remember that right-handed people wear a sword on their left hip.Travelling on the left allowed you to keep your weapon arm toward your opponent，who would be on your right.This practice continued until the 18th century when a law was passed requiring all traffic crossing London Bridge to keep to the left.
Visitors to the UK that have just washed their hands in an old-fashioned sink might be wondering why one tap is only for hot water，the other cold.3..So，why this oddity? It relates to a time when hot and cold water were kept separate to prevent pollution.Drinkable cold water came from a mains supply，but hot water came from attic tanks and was not considered suitable for consumption.So they were kept apart.
Millions of people drink tea worldwide，but the odd Brits put milk in theirs.Why? This mysterious practice relates to the quality of china cup used in the 18th century when tea was first imposed.For the majority of Brits，the cups available couldn’t stand the heat of the boiling water and would break，so milk was added first.4..And this practical tweak soon became a national habit.
5..As you can see，these odd Brits have perfectly clear reasons for left-hand driving，two-tap sinks and tea with milk.Even if they still seem strange，at least now you’re in the know.
A.This makes it difficult to improve
B.There is a method to the madness
C.This unusual behavior makes sense
D.You can know the origins of the practices
E.Either can make washing very uncomfortable
F.This cooled the cup enough to resist the boiling water
G.Here are the reasons for three of Britain’s more puzzling practices
