—Would you like me to help you with the maths problem?
—___________ It’s a most difficult one.
A.With pleasure. B.Why not?
C.That’s all right. D.It’s my pleasure.
We were going out for a walk ________ it began to rain.
A. while B. before C. as D. when
I want to buy that kind of cloth because I _____ the cloth _____ well.
A．have been told; washes B．have told; washes
C．was told; washed D．have been told; is washed
书面表达
假设你是高中生李越，发现校园中存在的高中生普遍不愿意参加体育活动（physical exercise）的现象。他们认为学习紧张，进行体育活动会浪费时间，影响学习。但是，作为校学生会的体育部长，你对此有不同的想法。决定在校英语报上，就此话题，结合自己的经历，写一篇100-120个词的短文，向大家宣传体育锻炼的好处。短文中应包括以下内容：
1. 指出他们观点的不对之处；
2. 告知体育锻炼的好处；
3. 结合自身经验，提出建议。
阅读填空
Bassanio fell in love1. Portia, but he couldn’t ask her to marry him 2. he was poor. He had to borrow some money3. ______ his friend Antonio, a merchant of Venice. Antonio had no money then. He went to Shylock, a cruel and4.______ (greed) money-lender. Shylock agreed to lend him the money on condition that he would cut a pound of his flesh5.______ he couldn’t repay him within three months.
Unfortunately Antonio’s ships were lost6. sea. 7.______ (know) that Antonio probably had to die, Portia asked Bassanio to go to see his friend at once. She dressed herself 8. as a lawyer and turned up at the court. She let Shylock cut just9.______ one pound of flesh off Antonio, no more, no less, no drop of blood, otherwise he10. ______ lose all his money. Her clever idea saved Antonio and made Shylock give half of his money to Venice.
WASHINGTON—Two-thirds of the world’s polar bear population could be gone by 2050 if predictions of melting sea ice hold true, the US Geological Survey reported on Friday.
The fate of polar bears could be even worse than that estimate, because sea ice in the Arctic might be disappearing faster than the available computer models predict, the geological survey said in a report aimed at determining whether the big white bear should be listed as a threatened species.
“There is a definite link between changes in the sea ice and the welfare of polar bears,” said Steve Amstrup, who led the research team. He says Arctic sea ice is already at the lowest this year and is expected to retreat(退却) farther this month.
That means that polar bears—some 16,000 of them -- will disappear by 2050 from parts of the Arctic where sea ice is melting most rapidly, along the north coasts of Alaska and Russia, researchers said in a telephone briefing(简报).
Other polar bears could survive beyond that date but many of those could be gone by 2100, Amstrup said. By this century’s end, the only polar bears left might live in the Canadian Arctic islands and along the west coast of Greenland.
“It is likely to result in loss of approximately two-thirds of the world’s current polar bear population by the mid 21st century,” the report’s executive summary said.
“Because the observed trajectory(轨迹)of Arctic sea ice decline appears to be underestimated by currently available models, this assessment of future polar bear status may be conservative(保守的).”
In January, the US Fish and Wildlife Service proposed listing the polar bear as a threatened species, noting polar bears depend on sea ice as a platform to hunt seals, their main food.
Without enough sea ice, polar bears would be forced onto land, but they are poor hunters once they get out of the water and ice, the researchers said. The bears’ disappearance would probably take place as young cubs(幼兽)failed to survive to adulthood and females were unable to reproduce successfully.
1.What was the US Geological Survey intended to do?
A. To determine whether the polar bear was in danger.
B. To measure how fast the sea ice melts in the Arctic.
C. To check the predictions of the computer models.
D. To find out the exact number of the polar bear.
2.What causes the polar bears to disappear by 2050?
A. The pollution of the Arctic region. B. The sea ice melting at high speed
C. Fewer food sources being left. D. The temperature getting colder.
3.The key to preventing polar bears dying out seems to _______________.
A. help young polar bears to survive the cold winter
B. have large number of seals living in the oceans
C. make sure there is enough sea ice in the Arctic
D. provide chances for adult polar bears to reproduce
