完形填空(共20小题；每小题1分，满分20分)

    阅读下面短文，掌握其大意，然后从36—55各题所给的四个选项(A、B、C和D)中，

选出最佳选项，并在答题卡上将该项涂黑。

Two old beggars were sitting on a busy corner. They watched helplessly as scores of people walked by, some purposely ___36___ them and others too caught up in their own cares to even notice their __37__. Every so often, a __38__woman or a small child would drop a few coins in the __39__ which lay in front of them.

   As the crowd began to die down, they started to __40_ their things and head for their evening shelters. Just as they were getting ready to leave, they noticed a man walking toward them. He was obviously a _ 41   man ----they could tell that from his finely tailored business suit.

   The first beggar whispered to the second with _____, “ He’s coming our way!”

   The two tried not to look ___43____ at the man as he stepped closer to them, but they couldn’t ___44___ gazing up with anticipation (期待) as he reached into his pocket and took something out.

    “Trunk” was the only sound they heard __45___ what looked like a piece of hard _46__, wrapped in tissue paper hit each of their waiting hats. The rich man __47__ and continued on his way, not making a backward glance.

“How insulting (侮辱人的)!” said the first beggar. “He could have __48___ left us a few coins or a spare bill, but he mocks (嘲弄) us with a piece of rock candy. Who does he think we are ----__49___? There’s no way we can even eat this ---------we have no __50___.” He picked up the object and threw it into the gutter(排水沟).

“I haven’t had anything like this for ages,” the _51_beggar thought. “I can’t chew it, but I can suck on it for while, and the sugary juices will stay in my _52__ for a long time. How nice of that man to offer me something so sweet.”

With that, he _53_ the white tissue paper, but to his _54__, there was no hard rock candy inside. _55_, into his fell a shiny white pearl worth thousands of dollars.

Two scientists in California now think they can find out a person’s real age.Jeffery Bada and Patricia Masters do chemical tests on teeth.When we are born the amino acids（氨基酸）in our teeth are in one form.Then，as we grow older these amino acids change into a second form.Every year，one thousandth of the amino acids changed.So，by testing just one tooth and counting the number of amino acids in each form，Bada and Masters can work out a person’s age.They tested a tooth from the body of an Eskimo（爱斯基摩人）woman who died 1 600 years ago.From the appearance of her body，she was between 50 and 60 years old when she died.The tooth test put her age at 53.Then the Russian Government sent them a tooth from an old man in Georgia.The tooth said she was 99.Her real age was 96.The Russians are now hoping to send more teeth，from the very old people without birth certificates（出生证明书）.But there are problems.Some of the centenarians（百岁老人）have lost all their teeth.The others want to keep their teeth until they drop out naturally.So the Russian Government and the American scientists have to wait and hope.

61.Jeffery Bada and Patricia Masters believe that they can tell a person’s age according to_______.

A.an experiment on his bone

B.the shape and condition of his teeth

C.a test on the amino acids within his body

D.the changing form of amino acids in his teeth

62.According to the passage，which of the following statements is true?

A.The amino acids in an adult’s teeth may differ from those in a baby’s.

B.The number of amino acids in a 20-year-old man is different from that when he was seven.

C.Amino acids in one teeth changes without affecting their forms.

D.Scientists now can tell how long a person will live by testing his teeth.

63.Why are the two scientists asked to find out some very old Russians’ age?

A.Because the Government wants to know how long these old people can live.

B.Because they have no birth certificates.

C.Because people who have tooth problems tend to live longer.

D.Because the Government wants to know their dates of birth and death.

64.In order to find out the exact age of some people over 100，both the Russian Government and American scientists_______.

A.should wait until all of them die

B.should pull out one of their teeth

C.have to wait for their teeth to drop out naturally

D.want to have their teeth pulled out

65.The central idea of the passage is_______.

A.the relationship between people’s teeth and ages

B.the relationship between amino acids and teeth

C.the contradiction（矛盾）between scientists and patients

D.the contradiction between the Government and the scientists

完形填空(共20小题；每小题1分，满分20分)
阅读下面短文，掌握其大意，然后从36—55各题所给的四个选项(A、B、C和D)中，
选出最佳选项，并在答题卡上将该项涂黑。
Two old beggars were sitting on a busy corner. They watched helplessly as scores of people walked by, some purposely ___36___ them and others too caught up in their own cares to even notice their __37__. Every so often, a __38__woman or a small child would drop a few coins in the __39__ which lay in front of them.
As the crowd began to die down, they started to __40_ their things and head for their evening shelters. Just as they were getting ready to leave, they noticed a man walking toward them. He was obviously a _ 41   man ----they could tell that from his finely tailored business suit.
The first beggar whispered to the second with _____, “ He’s coming our way!”
The two tried not to look ___43____ at the man as he stepped closer to them, but they couldn’t ___44___ gazing up with anticipation (期待) as he reached into his pocket and took something out.
“Trunk” was the only sound they heard __45___ what looked like a piece of hard _46__, wrapped in tissue paper hit each of their waiting hats. The rich man __47__ and continued on his way, not making a backward glance.
“How insulting (侮辱人的)!” said the first beggar. “He could have __48___ left us a few coins or a spare bill, but he mocks (嘲弄) us with a piece of rock candy. Who does he think we are ----__49___? There’s no way we can even eat this ---------we have no __50___.” He picked up the object and threw it into the gutter(排水沟).
“I haven’t had anything like this for ages,” the _51_beggar thought. “I can’t chew it, but I can suck on it for while, and the sugary juices will stay in my _52__ for a long time. How nice of that man to offer me something so sweet.”
With that, he _53_ the white tissue paper, but to his _54__, there was no hard rock candy inside. _55_, into his fell a shiny white pearl worth thousands of dollars.

阅读下面短文并回答问题，然后将答案写到答题卡相应的位置上(请注意问题后的词数要求)。

[1]Weighing too much can damage your health，and obesity is a growing problem for both kids and adults around the world．

[2]Sleep might be one answer to the problem．A new study has found that elementary school students who slept too little were more likely to gain pounds．

[3]Past studies have shown a link between sleeping less and weighing more，but scientists have had a tough time determining“which came first，the chicken or the egg，”says Julie C．Lumeng of the University of Michigan in Ann Arbor．

[4] In other words，it hasn't been clear whether kids who weigh too much have trouble sleeping，or whether          leads to weight gain．Both scenarios Seemed equally possible．

[5] To get a better idea of which causes which，Lumeng and colleagues interviewed the parents of 785 third graders from around the United States．The parents answered questions about how well their kids slept that year．Three years later, the parents answered the same questions.

[6]By sixth grade，18 percent of kids involved in the study were obese．The scientists found no relationship between weight and the students’race or gender．It also didn't matter how strict their parents were，or whether they were boys or girls．Obesity struck all of these groups equally.

[7]Instead，sleep seemed to be the key factor．Over the 3 years of the study, the children averaged a healthy 9．5 hours of sleep a night．Some kids．however, slept a lot more—or less—than others.

[8]For the sixth graders，every hour of sleep above the 9．5-hour average was linked to a 20 percent lower risk of being obese．Sleep appeared doubly important for the third graders．Every extra hour of sleep they got was linked to a 40 percent drop in obesity by sixth grade．

76．What's the main idea of the passage?(no more than 10 words)

77．What's the difference between the old studies and the new studies referred in the passage?(no more than 10 words)

78．What is the average healthy hours of sleep a night for children?(no more than 2 words)

79．What is the purpose of the study mentioned in the passage?(no more than 15 words)

80．Fill in the blank in Paragraph 4 with proper words．(no more than 5 words)