题目内容

A company ______profits from home markets are declining may seek opportunities abroad.

A. which B. whose C. who D. why

 

B

【解析】本题定语从句的先行词是A company,后面的定语从句中名词profits前面缺少定语修饰,所以使用关系代词whose引导起这个定语从句,并在句中做定语。ACD三项通常都不能在定语从句中做定语的。Whose profits相当于the profits of which。句意:一个利润主要来自国内的公司也许可以开拓国际市场。故B正确。

 

练习册系列答案
相关题目

Robert Moody, 52, is an experienced police officer. Much of his work involves dealing with drugs and gang problems in the schools of his community. Knowing that many kids often ______trouble, he decided to do something about it. So in 1991 he began to invite small groups of kids to go fishing with him on his day off.

Those fun trips had a______impact. A chance encounter in 2000 proved that. One day, while working security at a school basketball game, Moody noticed two young guys _______. He sensed trouble between them. _____, one of them headed toward Moody and gave him a hug. “I remember you. You took me ______ when I was in fifth grade. That was one of the ______days of my life.”

Deeply touched by the boy’s words, Moody decided to create a foundation that ____ teenagers to the basis of fishing in camping programs. “As a policeman, I saw where there was violence, drugs were always behind it. They have a damage ______ on the kids,” says Moody.

By turning kids on to fishing, he intended to present an alternative way of life, “When you are sitting there waiting for a _______” he says, “you can’t help but talk to each other, and such conversation can be very deep.”

“Talking about drugs helped prepare me for the peer(同龄人) pressures in high school ,”says Michelle, 17, who _______ the first program. “And I was able to help my little brother _______ drugs”

Moody faces retirement in three years, when he hopes to run the foundation full-time. “I’m living a happy life and I have a responsibility to my_____to give back,” Moody says. “If I teach a kid to fish today, he can teach his brother to fish tomorrow.”

1.A. ran into B. got over C. left behind D. looked into

2.A. immediate B. damaging C. limited D. lasting

3.A. quarreling B. complaining C. talking D. cheering

4.A. Slowly B. Suddenly C. Finally D. Secretly

5.A. fishing B. sailing C. boating D. swimming

6.A. quietest B. longest C. best D. busiest

7.A. connects B. introduces C. reduces D. commits

8.A. impression B. burden C. decision D. effect

9.A. solution B. change C. bite D. surprise

10.A. participated in B. worked out C. approved of D. made up

11.A. misuse B. avoid C. tolerate D. test

12.A. team B. school C. family D. community

 

When different species of birds flock (聚集) together, their flight formations are determined by social dynamics both between and within species.

New research from the Universities of Cambridge and Exeter reveals for the first time that, contrary to current models used to explain the movement of flocks, the differences between bird species and social relationships between individuals play a critical role in determining the dynamics of mixed-species flocks.

The unified(群集) behaviour of bird flocks has puzzled scientists for hundreds of years. One naturalist from the turn of the century even suggested telepathy(心灵感应)may be involved. There have since been more logical explanations, including mathematical models that show that repeated interactions among individuals following simple rules can generate coordinated (协同的)group movements. However, these models usually rely on the assumption that individuals within groups are identical and interact independently, which may not reflect reality.

Jolle Jolles, a PhD student at the University of Cambridge's Department of Zoology and author of the paper, said:“Spectacular collective behaviour can be found in a large range of animal species, and we now know that often these complex coordinated group movements may be the result of individuals following simple rules. However, rarely are the individual characteristics and social relationships within them taken into account. Our research highlights that these striking displays of group behaviour are much more complex.”

By analysing high-resolution photographs of mixed flocks of rooks and jackdaws (both from the corvid family), the researchers found that rather than individuals interacting in a consistent fashion throughout the flock, interactions depended on social dynamics between the different species as well as relationships within a species.

The researchers discovered that birds prefer to fly close to members of their own species, and that the larger and more dominant rooks take the lead by flying near the front of flocks. Additionally, the lifelong, monogamous(一妻一夫制的)pair bonds that are characteristic of both species seem to be reflected in flight, as birds often fly particularly close to a single, same-species partner.

Dr Alex Thornton, principal investigator of the Cambridge Jackdaw Project, now at the University of Exeter and author of the paper, said: “Together, our findings demonstrate that to understand the structure of groups — such as bird flocks — we need to consider the characteristics and relationships of the individuals within them.”

1.The underlined word “generate” means ______.

A. set down B. take away

C. bring about D. give up

2.According to Jolle Jolles, what are seldom considered about coordinated group movement?

A. Individual characteristics and social relationship between them

B. Repeated interactions among individuals and social dynamics

C. Telepathy and social relationship between them

D. The structure of groups and the varieties of species

3.Birds may prefer to fly the closest to _____ .

A. the largest one B. the most dynamic one

C. the lifelong partner D. the friendly partner

4.What is the main idea of the passage?

A. How birds interact in simple rules.

B. How birds of different feathers flock together.

C. Why birds show preference to flocking.

D. Why birds display the characteristics.

 

In the 1950s,a family who owned a farm near Beulah,Michigan kept a bull chained to an elm (榆树).The bull paced around the tree,dragging the heavy iron chain,which led to a groove (槽) in the bark.The groove deepened over the years,though for whatever reason,it did not kill the tree.

After some years,the family took their bull away.They cut the chain,leaving the loop (圈) around the tree and one link hanging down.

Then one year,agricultural disaster struck Michigan in the form of Dutch Elm Disease.All of the elms lining the road leading to the farm became infected and died.Everyone thought that the old elm would be next.

The farm’s owners considered doing the safe thing:pulling it out and cutting it up into firewood before it died.But they simply could not bring themselves to do it.It was as if the old tree had become a family friend.So they decided to let_nature_take_its_course.

Amazingly,the tree did not die.Nobody could understand why it was the only elm that was still standing in the country!

Plant pathologists(病理学家) from Michigan State University came out to observe the tree.They observed the scar left by the iron chain,now almost completely covered by bark.The plant experts decided that it was the chain that saved the elm’s life.They reasoned that the tree must have absorbed so much iron from the chain that it became immune (免疫) to the fungus (真菌).

It’s said that what doesn’t kill you will make you stronger.Or,as Ernest Hemimgway put it,“Life breaks us all,but afterwards,many of us are strongest at the broken places.”

1.What happened to the elms in Michigan during the agricultural disaster?

A.The elms were tied by iron chains.

B.Some of the elms were cut up into firewood.

C.All the elms were infected by a disease and died.

D.Nearly all of the elms died of a disease.

2.From the passage we can learn that the old elm was saved by________.

A.the groove in the bark B.the fungus in the tree

C.the iron remaining in it D.its own immune system

3.The underlined sentence “let_nature_take_its_course” means______.

A.leave the elm at the mercy of nature

B.help the elm grow normally

C.let nature take the elm away

D.have nature give a lesson to the elm

4.What is the best title for the text?

A.Never Lose Heart in Trouble

B.Strike While the Iron is Hot

C.Brave to Face Failure

D.Stronger after Suffering

 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网