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7.A.At a restaurant.
B.At a theatre.
C.At a station.
D.At a drugstore.
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17.Like people,plants experience stress.And also,like people,the response to that stress can determine success.
Bad environmental conditions,such as drought,flood,heat and other stresses,affect yields(产量 ) more than crop pests and diseases.We are trying to find a way to equip plants with the ability to tolerate nvironmental stress and maintain high yields,said Stephen Howell,a professor of genetics and cell biology.
Plant cells produce proteins (蛋白质) and ship them to different parts of the cell.Under normal conditions,these proteins are folded into their normal,healthy structures as they are produced.When a plant is under stress,its cells produce poorly folded or unfolded proteis.Then a built-in system senses this and"sets off an alarm in the cell,"said Howell.
In response to the alarm,another protein (IRE1)starts working and creates a different process which activates (激活) the stress response genes whose products bring about defensive measures that help the plant survive.
"As it turns out,responses that are activated under stress conditions actually inhibit the growth of plants,"said Howell."This allows them to preserve their energy to survive the stress conditions."
For plants in the wild,this response is a help for survival,he said.In production of agriculture crops,however,this response reduces yields.
"You don't want crop plants to stop growing,"Howell said."You want them to continue to grow and produce even though they are under stress."
With the new understanding of this stress response,the next step may be to silence the alarm system,said Howell."What may be important is to disable some of these stress responses.That may make the plant more productive under stress conditions."
8.According to the text,an alarm in the plant cells is caused byB
A.the folded proteins
B.the changed proteins
C.the defensive measures
D.the stress response genes
9.The energy preserved in the plants under stress conditionsA.
A.helps the plants to survive
B.helps to maintain high yields
C.keeps the plants growing
D.helps to produce proteins
10.The underlined word"inhibit"in Paragraph 5can bereplaced by"A".
A.prevent
B.start
C.continue
D.promote
11.How does Howell intend to make crop plants maintain high yields under stress conditions?C
A.By making crop plants keep more energy.
B.By making crop plants stop growing.
C.By making the alarm system stop working.
D.By making the alarm system respond quickly.
18.听第9段材料,回答第15至17题.
15.What is the man's office number?
A.646-49966.
B.646-42266.
C.633-25646.
16.What does the man book?
A.Three bottles of red wine.
B.A table in the general hall.
C.A private room without a KTV.
17.When will the man get to the restaurant?
A.About 7:30 p.m.on Friday.
B.About 7 p.m.on Saturday.
C.About 7:30 p.m.on Saturday.
15.听第10段材料,回答第17至20题.
17.Where is the Royal Botanic Garden?
A.In the center of Sydney
B.Near Sydney
C.Far way from Sydney
18.How can visitors get to the entrance of the Taronga Zoo?
A.By bus B.By train C.By cable car
19.Which of the following places is the birthplace of Sydney?
A.The shops B.The Rocks C.The cafes
20.What does the speaker think of Sydney?
A.A place to escape winter
B.A place for shopping
C.A place to enjoy swimming.
2.听第10段材料,回答第17至20题.
17.Where did the speaker take a journey last year?
A.In south-west Africa.
B.In south-east Africa.
C.In south-west Asia.
18.What did the speaker have to carry during his journey?
A.Enough food.
B.Plenty of water.
C.A lot of clothes.
19.How many hours did the speaker walk every day?
A.Five.
B.Three.
C.Two.
20.Where did the speaker stay for the hottest part of the day?
A.Under some rocks.
B.Under some trees.
C.Under a space blanket.
12.A.Go picnicking.
B.Meet Prof.Smith.
C.Finish his report.
D.Play football.
19.A.5,418 km
B.5,481 km
C.9,000 km
D.3,592 km.
16.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.每处错误仅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.
The Internet is playing a important part in our daily life.On the net,we can learn about
news both home and abroad and some other informations as well.We can also make phone calls,send messages by e-mails,go to net schools,and learn foreign languages by ourselves.Beside,we can enjoy music,watch sports matches,and play the chess or cards. The net even help us do shopping,have a chat with others and make friends with him.In the word,the Internet has made our life more easier.
17.听第10段材料,回答第17至第20四个小题.
17.What does Joe imagine his clothes will be like in 20years?
A.Colorful and light.
B.Dark and cool.
C.Comfortable and cool.
18.Where will Joe spend his vacation?
A.In the mountains.
B.In space or under the sea.
C.In his garden.
19.Why does Joe want to make friends with people around the world?
A.To play sports with them.
B.To learn cultures from them.
C.To watch TV with them.
20.Joe mainly tells us about hisC in 20years.
A.food
B.house
C.life.
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