[单项选择]It can be concluded from the passage that ______.
A. the positive and negative ions are always equivalent in the air
B. when winds such as the Mistral, Foehn, Hamsin or Sharav are blowing in certain countries, larger proportion of positive ions are found
C. some sensitive people feel sick or become mentally disturbed when a large number of negative ions are present
D. ionizers, according to some scientists, can generate both kinds of ions that make people feel good

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[单项选择]What can be concluded from this passage
A. Watching TV is better than doing exercise.
B. Sit-up is harmful for you health.
C. Playing football is harmful for people.
D. Exercise is good for health.

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[单项选择]We can concluded from the passage that Eliot Spitzer is______.
A. grandstanding and egomaniacal
B. greedy and cunning
C. ambitious and businesslike
D. honest and forgiving

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[单项选择]It can be concluded from the passage that newspaper readers______.
A. apply reading techniques skillfully
B. jump from one newspaper to another
C. appreciate the variety of a newspaper
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[单项选择]It can be concluded from the passage that.
A. the circulation of atmosphere protects the biosphere and makes life on earth possible.
B. if the protective atmosphere is too damaged by human activity, all life will cease.
C. life is the result of complex interdependent events of nature
D. despite the complexity and power of the atmosphere humans can affect it greatly

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[单项选择]It can be concluded from the passage about WAOAW that______.
A. men are eligible for membership
B. The dues are reasonable
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[单项选择]It can be concluded from the passage that the writer ______.
A. calls attention to the living conditions of older Americans.
B. believes that the value of older people is gaining increasing recognition.
C. attempts to justify the youth-oriented, throw-away culture of the United States.
D. argues people should not retire at the age of 65 or 70.

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[单项选择]It can be concluded from the passage that the author's attitude toward "sex selection" is ________.
A. negative
B. positive
C. neutral
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