摘要: A. lesson B. truth C. saying D. story A American researchers say drinking tea may help strengthen the body’s defense system against infection. Doctors at Brigham and Women’s Hospital in Boston, Massachusetts, did the study. The team studied a chemical found in black, green, oolong and pekoe tea. This chemical is an amino acidcalled L-theanine. The scientists say it may increase the strength of gamma delta T cells. That’s the letter T, not the drink. Gamma delta T cells are part of the body’s defenses. First, the researchers mixed some of these cells with antigensfound in the amino acid. Antigens help the body react to infection. Then the scientists added some bacteria. Within twenty-four hours, the cells produced a lot of interferon, a substance that fights infection. Cells not mixed with the antigens did not produce interferon. In the second part of the study, eleven people drank five to six cups of black tea every day. Ten other people drank the same amount of instant coffee. That is dried coffee mixed with hot water. Two weeks later, and again two weeks after that, the researchers tested the blood of all twenty-one people. They also looked at what happened when they added bacteria to the blood cells. They found that the tea drinkers produced five times more interferon after they started drinking tea. The coffee drinkers did not produce interferon. Doctor Jack Bukowski led the study. He says the antigens added to the gamma delta T cells were responsible for the increased reaction to the bacteria. He says the study also showed that the cells were able to remember the bacteria and fight them again the next time. Earlier research already has found that tea can help prevent heart disease and cancer. Doctor Bukowski says the new study must be repeated with more people. If the findings prove to be true, he says, then tea drinking might also help protect against bacterial infections. He says the amino acid L-theanine could be removed from tea and used as a drug to strengthen the body’s defenses.

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  Forty-three years seems like a long time to remember the name of a person.I have forgotten the name of an old lady who was a(n)  1   on my paper route when I was a twelve-year-old boy.Yet it seems like just yesterday that she taught me a lesson in   2  .One afternoon, a friend and I were   3   rocks onto the roof of the old lady’s house   4   her backyard.The object of our play was to observe how the rocks changed to missiles as they   5   to the roof’s edge and shot out into the   6  

  I found myself a perfectly smooth rock and sent it for a ride.The stone was too smooth, however, so it   7   from my hand as I let it go and headed   8   for a small window on the old lady’s back wall.

  I was too scared about getting   9   that first night to be concerned about the old lady with the broken window.However, a few days later,   10   I was sure that I hadn’t been discovered, I started to feel   11   for her misfortune.

  I made up my mind that I would   12   my paper delivery money, and in three weeks I had the seven dollars that I   13   would cover the cost of her window.I put the money in an envelope with a(n)  14   explaining that I was sorry for breaking her window and hoped that the seven dollars would cover the   15   for repairing it.

  I waited until it was dark, then put the envelope through the letter slot in her door.

  The next day, I   16   the old lady her paper and was able to   17   the warm smile that I was   18   her.She thanked me for the paper and said,“Here, I have something for you.”It was a bag of cookies.I thanked her and ate the cookies as I   19   my route.

  After several cookies, I   20   an envelope.When I opened the envelope, I was shocked.Inside was the seven dollars and a short note that said,“I’m proud of you.”

(1)

[  ]

A.

adviser

B.

customer

C.

assistant

D.

neighbor

(2)

[  ]

A.

carefulness

B.

cleverness

C.

selfishness

D.

forgiveness

(3)

[  ]

A.

throwing

B.

kicking

C.

picking

D.

striking

(4)

[  ]

A.

by

B.

under

C.

from

D.

around

(5)

[  ]

A.

dropped

B.

rolled

C.

flowed

D.

fell

(6)

[  ]

A.

room

B.

kitchen

C.

yard

D.

sky

(7)

[  ]

A.

skipped

B.

stopped

C.

stepped

D.

slipped

(8)

[  ]

A.

straight

B.

slow

C.

right

D.

fast

(9)

[  ]

A.

lost

B.

trapped

C.

caught

D.

hurt

(10)

[  ]

A.

before

B.

when

C.

but

D.

though

(11)

[  ]

A.

guilty

B.

safe

C.

anxious

D.

nervous

(12)

[  ]

A.

borrow

B.

move

C.

transfer

D.

save

(13)

[  ]

A.

used

B.

calculated

C.

chose

D.

earned

(14)

[  ]

A.

book

B.

article

C.

note

D.

notice

(15)

[  ]

A.

period

B.

cost

C.

size

D.

distance

(16)

[  ]

A.

handed

B.

sold

C.

left

D.

showed

(17)

[  ]

A.

witness

B.

wear

C.

return

D.

bring

(18)

[  ]

A.

comparing to

B.

playing with

C.

learning about

D.

receiving from

(19)

[  ]

A.

continued

B.

chose

C.

followed

D.

forgot

(20)

[  ]

A.

tore

B.

marked

C.

bought

D.

felt

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