.Being exposed for a long time strong sunlight might seriously damage your skin.A. in B. under C. to D, over 题目和参考答案——青夏教育精英家教网—

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.Being exposed for a long time________strong sunlight might seriously damage your skin.
A. in B. under C. to D, over

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With only about 1,000 pandas left in the world, China is desperately trying to clone (克隆) the animal and save the endangered species(物种). That's a move similar to what a Texas A&M University researchers have been undertaking for the past five years in a project called “Noah's Ark”.

Noah's Ark is aimed at collecting eggs, embryos(胚胎)，semen and DNA of endangered animals and storing them in liquid nitrogen（氮）. If certain species should become extinct , Dr. Duane Kraemar, a professor in Texas A&M University Medicine, says there would be enough of the basic building blocks to reintroduce the species in the future.

It is estimated that as many as 2,000 species of mammals , birds reptiles will become extinct in over 100 years . The panda, native only to China , is in danger of becoming extinct in the next 25 years .

This week , Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit . They are now trying to implant the embryo into a host animal.

The entire procedure could take from three to five years to complete.

“The nuclear transfer(核子移植) of one species to another is not easy, and the lack of available(capable of being used) panda eggs could be a major problem，” Kraemer believes. “They will probably have to do several hundred transfers to result in one pregnancy(having a baby). It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort, ”adds Kraemer, who is one of the leaders of the Project at Texas A & M, the first–ever attempt at cloning a dog.

“They are trying to do something that’s never been done, and this is very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction. I certainly appreciate their effort and there’s a lot we can learn from what they are attempting to do. It’s a research that is very much needed.”

The aim of “Noah’s Ark” project is to ________.

A. make efforts to clone the endangered pandas

B. save endangered animals from dying out

C. collect DNA of endangered animals to study

D. transfer the nuclear of one animal to another

Ａccording to Professor Kraemer , the major problem in cloning pandas would be the lack of _______.

A. available panda eggs B. host animals

C. qualified researchers D. enough money

The best title for the passage may be ______.

A. China’s Success in Panda Cloning

B. The First Cloned Panda in the World

C. Exploring the Possibility to Clone Pandas

D. China---the Native Place of Pandas Forever

Do you wake up every day feeling too tired, or even upset? If so, then a new alarm clock could be just for you．

The clock, called SteepSmart, measures your sleep cycle, and waits ____（36） you to be in your lightest phase of sleep ____（37） rousing you．Its makers say that should ______（38） you wake up feeling refreshed every morning．As you sleep you pass____（39） a sequence of sleep states---light sleep, deep sleep and REM（rapid eye movement） sleep---that ____（40） approximately every 90 minutes．The point in that cycle at which you wake can ____（41） how you feel later, and may ____（42） have a greater impact than how much or little you have slept．Being roused during a light phase ____（43） you are more likely to wake up energetic．

SleepSmart ____（44） the distinct pattern of brain waves _____（45） during each phase of sleep, via a headband equipped _____（46） electrodes and a microprocessor．This measures the electrical activity of the wearer’s brain, in much the ____（47） way as some machines used for medical and research ____（48）, and communicates wirelessly with a clock unit near the bed．You ____（49） the clock with the latest time at _____（50） you want to be wakened, and it _____（51） duly wakes you during the last light sleep phase before that．

The _____（52） was invented by a group of students at Brown University in Rhode Island ____（53） a friend complained of waking up tired and performing poorly on a test．“_____（54） sleep-deprived people ourselves, we started thinking of _____（55） to do about it．” Says Eric Shashoua, a recent college graduate and now chief executive officer of Axon Sleep Research Laboratories, a company created by students to develop their idea．

A ．beside

A．upon

A．ensure

A．through

A．reveals

A．effect

A．already

A．means

A．removes

A．proceeded

A．by

A．familiar

A．findings

A．persevere

A．where

A．then

A．claim

A．once

A．Besides

A．what

B．near

B．before

B．assure

B．into

B．reverses

B．affect

B．ever

B．marks

B．relieves

B．produced

B．of

B．similar

B．prospects

B．program

B．this

B．also

B．conclusion

B．after

B．Despite

B．how

C．for

C．towards

C．require

C．about

C．resumes

C．reflect

C．never

C．says

C．records

C．pronounced

C．with

C．identical

C．proposals

C．prohibit

C．which

C．almost

C．concept

C．since

C．To

D．whether

D．around

D．till

D．request

D．on

D．repeats

D．perfect

D．even

D．dictates

D．recalls

D．progressed

D．over

D．same

D．purposes

D．plan

D．that

D．yet

D．explanation

D．while

D．As

D．when

When many people are worried that there are no more heroes in the modern times, two university students who lost their lives to rescue drowning children have shown that heroes still exist.

According to the Inner Mongolia Morning Post, the tragedy (悲剧) occurred on the afternoon of December 14, 2002 when three school students skating on a frozen lake in Qingcheng Park in Hohhot fell through the ice into the freezing water.

More than 20 university students who happened to be near the place where it happened immediately went to the rescue of the children.

Two children were quickly rescued, but the third died. The child’s body was not found for three hours. Two of the rescuers, Liu Ye and Hao Longbiao, also died of cold and tiredness.

The body of Hao who took the lead in jumping into the lake was not found until the next day.

A student who was unwilling to tell his name said he and his classmates from the local college were taking photos at the lake. When they heard the children’s cries for help, they went to the ice hole hand in hand to rescue the children. But the ice kept breaking, causing most of them to fall into the icy water.

Local people held mourning ceremonies (祭奠仪式) at the lake.

Eight of the students were seriously affected by the freezing water and were being kept in hospital for further observation (观察), but their lives were no longer in danger.

The underlined word “occurred” here means “_______”.

A. raised B. made C. guided D. happened

When the three students fell into water, the university students were___________.

A. skating on the ice

B. taking photos at the lake

C. having a picnic

D. walking along the lake

Which of the following is TRUE according to the passage?

A. Three students died on the same day in all.

B. Hao Longbiao’s body was found on December 14, 2002.

C. The university students didn’t think it dangerous to save the drowning children in the lake.

D. Local people were not brave in face of danger.

It can be inferred that ___________.

A. people think little of the two university students’ death

B. the ice on the lake wasn’t strong enough to skate on

C. some students regretted for what they had done

D. heroes don’t agree with what the students do

The author wrote the passage to _________.

A. warn people of the danger of skating on ice

B. ask people to learn from the brave university students

C. tell us a tragedy

D. advise university students to cherish (珍惜) their lives

Several times on my way to work, I passed a gentleman who I supposed homeless. He had a lot of his possessions 36 down to his bike and held a cardboard sign that said he was a 37 who doesn’t drink or do drugs, but would 38 anything that could be given. He usually has 39 on and is listening to the radio. He is always 40 his own business, often reading 41 . I’ve never seen him 42 “begging”.

Several times, while I was 43 him, I realized I had some food with me, so I turned 44 and offered him that food. He took off his headphones, and said, “Umm, blueberry muffins are my 45 !” with a big smile and a gleam in his 46 . He thanked me so 47 .

The graciousness(有礼貌) and humbleness（谦逊） of his 48 makes me want to continue to stop by with “ 49 ” of food, money or other gifts. In the past, I’ve met 50 folks who 51 the food I was offering, saying that they wanted only money instead.

So this wonderful gentleman being so open to receiving has been a 52 .

It also makes me think how 53 I am to receiving in my life --- am I humble and grateful when I am 54 with something? Sometimes yes, sometimes no, but 55 as gracious, humble and sincere as this wonderful man has been in receiving.

A. tied B. pulled C. attached D. matched

A. tourist B. gentleman C. beggar D. vet

A. take B. appreciate C. refuse D. consider

A. lights B. headphones C. cardboards D. radios

A. managing B. caring C. minding D. inspecting

A. as well B. in case C. in vain D. underway

A. desperately B. frequently C. currently D. actively

A. passing B. witnessing C. concerning D. treating

A. off B. down C. about D. around

A. favorites B. tastes C. experiences D. addiction

A. business B. eyes C. sign D. life

A. warmly B. specially C. enthusiastically D. absolutely

A. protecting B. receiving C. offering D. demanding

A. love B. relief C. contribution D. surprises

A. familiar B. normal C. sensitive D. homeless

A. turned down B. threw away C. fitted in D. figured out

A. surprise B. blessing C. disguise D. honor

A. dependable B. critical C. typical D. open

A. charged B. claimed C. gifted D. satisfied

A. permanently B. commonly C. rarely D. eventually

He hated being in the army because he had to obey c______________.

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