Don’t interrupt while another student is speaking， ?
A．will you B．won’t you C．do you D don’t you
开心蛙口算题卡系列答案科目：高中英语 来源： 题型：
With their reputation ______in the milk powder incident, the food companies need ______ their image.
A. ruining, improving B. ruined, to improve
C. to ruin, to be improved D. to be ruined, being improved
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科目：高中英语 来源： 题型：
―A lovely day, isn’t it?
―Yes. I love when the weather is like this. Why not have our lunch outside?
A．this B．it C．one D．that
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科目：高中英语 来源： 题型：
My cousin speaks English well indeed , but of course not ________ a native speaker .
A. as fluent as B. more fluent than
C. so fluently as D. much fluently than
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科目：高中英语 来源： 题型：
Why not come over at the weekend? The children seeing you again．
A．enjoyed B．will enjoy C．would enjoy D．have enjoyed
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科目：高中英语 来源： 题型：
With the speed-up of the railway，now you can get to your destination by train，
A．fast B．faster C．fastest D．the fastest
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科目：高中英语 来源： 题型：
Panda is one of remaining endangered animals in the world.
A．The; the B．A; a C．The; a D．不填；the
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科目：高中英语 来源： 题型：
--- Peter told me he wanted to come with us. Is it OK for you?
--- I don’t mind he pays for his meals.
A．as far as B．as well as C．as long as D．as soon as
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科目：高中英语 来源： 题型：阅读理解
Like distance runners on measured course, all of us will move through time in a roughly predictable pattern.
In the first stage of our lives, we develop and grow, reaching toward the top of physical vitality (energy).
After we grow up, however, the body begins a process of gradually wearing out.
A new awareness of physical fitness may help lengthen our years of health and vitality, yet nothing we do will work to stop the unavoidable force of aging.
Most of the changes of aging take place deep inside the body. The lungs become less able to take in oxygen. Powerful muscles gradually lose their strength. The heart loses power and pumps less blood. Bones grow easier to break.
Finally, we meet a stress, a stress that is greater than our physical resistance. Often, it is only a minor accident or chance infection (a disease caused by virus), but this time, it brings life to an end.
In 1932, a classic experiment nearly doubled the lifetime of rats, simply by cutting back the calories (unit for measuring the energy value of food) in their diet. The reason for the effect was then unknown.
Today, at the university of California at
For the first time, the mystery (something that is difficult to understand or to explain) of why we age is being seriously challenged. Scientists in many fields are now making striking and far-reaching discoveries.
An average lifetime lasts 75 years, yet in each of us lies a potential for a longer life. If we could keep the vitality and resistance to disease that we have at age twenty, we would live for 800 years.
68．What does the underlined word “it” refer to?
A．Physical vitality. B．Stress. C．Aging. D．Physical resistance.
69．The author believes the following EXCEPT that .
A．human’s life pattern is predictable
B．physical fitness can’t stop the force of aging
C．human’s lifetime will last longer than 75 years
D．all of the changes of aging take place deep inside the body
70．How did Dr. Paul Seagle lengthen the lifetime of rats in his experiment?
A．By limiting the protein in their diet.
B．By cutting the calories in their diet.
C．By resetting their clock of aging.
D．By keeping their physical fitness.
71．What is probably the best title for the article?
A．Two Great Experiments B．The Mystery of Human Life
C．Ways to lengthen Human Life D．The Breakthrough in the Study of Aging
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