题目内容

Camels are large animals living in dry areas. There are two species of camels; the Arabian camel with a single hump(驼背) from the dry desert areas of West Asia, and the Bactrian camel with two humps from Central and East Asia. Camels are over 7 feet tall and weigh over 1,600 pounds. They will live up to 40 to 50 years. Most camels are domesticated(驯化) and fed by people. Camels are plant-eaters.

Camels are very strong animals with wide, padded feet. They have thick leathery pads on their knees and chest. Camels have nostrils(鼻孔) that can open and close, protecting them from the desert environment. Bushy eyebrows and two rows of long eyelashes protect their eyes from sand. Their mouth is extremely tough, allowing camels to eat thorny(带刺的) desert plants. Their widened feet help them move without sinking into the sand. Their thick coats reflect sunlight, and also protect them from the intense heat from desert sand. Their long legs help by keeping them further from the hot ground.

Camels can go without food and water for 3 to 4 days. They do not store water in their humps as is commonly believed.The humps are actually a container of fat. Camels are incredibly well-adapted to their environment. When conditions heat up, camels can increase their own body temperature, which prevents sweating and therefore water loss. They may not sweat at all during the day.

Camels are sometimes called “ships of the desert” because people ride them around the hot, dry deserts of the world. However, the number of camels is becoming smaller for various reasons.

1.According to the passage, camels usually live in ________.

A. Asia B. Africa

C. America D. Australia

2.Paragraph 2 is mainly about ________.

A. camels are useful animals

B. camels are clever animals

C. camels’ body structure and function

D. camels’ characteristics and habits

3.The reason why camels lose little water in deserts is that they ________.

A. get water from green foods

B. can adjust their temperature

C. store enough water in the humps

D. can manage without water

4.What will the author probably talk about following the last paragraph?

A. Ways to protect camels.

B. Habitats of camels.

C. Reasons for raising camels.

D. Functions of camels.

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Being organized is an important skill for school and life.When you’re well organized, you can stay focused,instead of spending time hunting things down.

1.For schoolwork, it means having one notebook or place where you store all your assignment,so you know what you have to do and when. Keeping all your school work neat and in a specific place--these are the main parts of organization.

For home stuff, being organized means having a place to put your things and putting them back as you go.2.It means keeping your schoolbag,your shoes, and your clean underwear in the same places so you always know where to find them.

Planning is part of being organized, too. 3.Calendars,lists,and schedules can help you plan. You can buy or draw a calendar and keep it near your workplace. Making a schedule or “to-do” list for yourself is a good idea. Looking at your list helps you keep track of what you need to do. 4.Check off things when you’ve done them. Use your list to help you decide which thing is the most important to work on first.

5.But once you’re organized,it feels great.The less time you spend hunting around for things or panicking about homework,the more time you have for better things,like reading a good book or playing.

A. Planning means deciding what you will do and when you will do it.

B. First,you should get your schoolwork organized.

C. Add new things as you get assignments.

D. You will benefit a lot from a good habit.

E. What does it mean to be organized?

F. It takes some extra efforts to organize yourself and your stuff.

G. It means hanging your coat up instead of dropping it on the floor or throwing it on a chair.

We are often warned by our teacher not to waste precious time, because time _______ will never return. I think it quite _______. What does time look like? Nobody knows for we can’t see it or _______ it and no amount of money can ________it. Time is abstract, so we have to _______ about it.

Time passes very quickly. Some students say they don’t have _______ time to review all their lessons. It is because they don’t know how to make _______ of their time. They waste it in going to theatres, cinemas and parks, and doing _______ things. Why do we study every day? Why do we________? Why do most people would rather ________ buses instead of walking? The ________ is very simple. We wish to save time because time is ________.

Today we are living in the 21st century. We look upon time as ________. When a person dies, his life ________. Since life is short, we must ________ our time and energy to our study so that we may be able to ________ the people well in the future. Laziness is the ________ of time, for it does not only bring us failure but also ________ us other harm. If it is necessary for us to do our work today, let us do it today and not ________ it until tomorrow.

Remember that time is much more ________ than money.

1.A. lost B. found C. expected D. made

2.A. false B. true C. abstract D. valuable

3.A. get B. have C. see D. touch

4.A. find B. buy C. sense D. realize

5.A. worry B. discuss C. advise D. think

6.A. enough B. little C. valuable D. useful

7.A. up B. light C. use D. fun

8.A. other B. another C. some D. any

9.A. drink B. eat C. think D. work

10.A. borrow B. get C. make D. take

11.A. question B. answer C. problem D. method

12.A. valueless B. precious C. endless D. fast

13.A. money B. life C. gold D. water

14.A. comes to B. begins C. ends D. lives

15.A. waste B. devote C. put D. value

16.A. ask B. remember C. save D. serve

17.A. friend B. maker C. mother D. thief

18.A. brings B. does C. takes D. sends

19.A. leave B. forget C. remain D. stay

20.A. useful B. cheap C. heavy D. valuable

A female runner from Kenya came third at the Austin Marathon Sunday. Against great ____,she crawled(爬)on her hands and______across the finish line. Ngetich , 29,was______the pack of top female runners at the 23-mile mark,but____ victory in sight,she started to feel tired. By the time the finish line______into view,Ngetich's

body began to______,but the determined runner was not ready to give up. ____to run anymore,Ngetich went down to her knees and began to crawl on all fours, her eyes______on the finish line. Race volunteers rushed to Ngetich's side rolling a______but she refused to sit in it. She continued to______forward down Congress Avenue under the watchful eyes of medical staff, with the crowd cheering her on______ step of the way. If anyone ____her help,Ngetich would have been disqualified from the race. At one point,Ngetich had a______in order to gather her strength.

Right______she crossed the finish line,Austin runner Steffan beat Ngetich for second place. Her teammate Jerop won the race in 2:54:22. But it was the______Ms Ngetich who won the hearts of the fans Sunday.“You ran the bravest ______ and crawled the bravest crawl I have ______ seen in my life. You have earned much honor,and I am going to adjust your prize money,______you get the same prize money you would have gotten if you were______”Austin Marathon race director said.

The 29-year-old runner recalled that what gave her the strength to______on was that she believed perseverance does win out.

1.A. difficulty B. sorrow C. confidence D. power

2.A. feet B. legs C. knees D. arms

3.A. making B. attending C. joining D. leading

4.A. to B. with C. from D. by

5.A. came B. flew C. took D. brought

6.A. go down B. shut down C. turn down D. put down

7.A. Unable B. Unfortunate C. Unwilling D. Uninterested

8.A. impressed B. locked C. watched D. observed

9.A. bench B. chair C. sofa D. wheelchair

10.A. put B. look C. inch D. step

11.A. either B. his quick C. every D. the tiring

12.A. provided B. offered C. supplied D. handed

13.A. rest B. breath C. talk D. pause

14.A. after B. when C. as D. before

15.A. determined B. optimistic C. intelligent D. outstanding

16.A. competition B. speed C. race D. fame

17.A. completely B. frequently C. never D. ever

18.A. so B. however C. while D. though

19.A. first B. second C. third D. fourth

20.A. rely B. call C. carry D. take

According to a team of researchers, an animals' ability to perceive(感知)time is linked to their pace of life.

"Our results lend support to the importance of time perception in animals where the ability to

perceive time in a very short time may be the difference between life and death for fast moving

creatures." commented lead author Kevin Healy from Trinity College Dublin.

The study was done with a variety of animals using a phenomenon based on the maximum speed of flashes of light an individual can see before the light source is seen as constant. Dogs, for example, have eyes with a refresh rate higher than humans.

One example of this phenomenon at work, the authors say, is the housefly and its ability to avoid being hit. The research showed flies "observe motion in a shorter time than our own eyes can achieve," which allows them to avoid being hit.

Professor Graeme Ruxton of the University of St Andrews in Scotland, who worked jointly(共同地) on the research project, said in a statement, "Having eyes that send updates to the brain at much higher frequencies than our eyes do is of no value if the brain cannot process that information equally quickly. Thus, this work highlights the impressive abilities of even the smallest animal brains. Flies might not be deep thinkers, but they can make good decisions very quickly."

In comparison the tiger beetle(虎甲虫)runs faster than its eyes can keep up, basically becoming blind, which requires it to stop periodically to re-evaluate its prey's(猎物)position.

Our results suggest that time perception offers an as yet unstudied dimension along which

animals can specialize and there is considerable range to study this system in more detail.

1.What is the research mentioned in the passage mainly about?

A. Pace of life of animals. B. Time perception of animals.

C. Lifetime of small animals. D. Impressive abilities of animals.

2.Why can houseflies avoid being hit?

A. They can think very deeply before they act.

B. They can fly much faster than their eyes can keep up.

C. They can process the information as quickly as they receive it.

D. They can send information to brain more quickly than to their eyes.

3.What will a tiger beetle have to do to catch a moving prey?

A. Try to run as fast as it can. B. Prevent itself from becoming blind.

C. Slow down to gain its time perception. D. Stop occasionally to spot the prey again.

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