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(1).无中枢抑制作用的药物是（）。|(2).用于皮肤粘膜变态反应性疾病的药物是（）。|(3).防晕止吐的药物是（）。|(4).治疗支气管哮喘的药物是（）。 A. 咪唑 B. 苯海拉明 C. 两者均是 D. 两者均不是
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A.
since
B.
because
C.
despite
D.
though
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A.
has become
B.
became
C.
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D.
has been
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【单选题】The IPCC announcement three years ago that 'most of the warming observed over the last 50 years is'______.
A.
possibly due to human activities
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possibly because human activities
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due to likely human activities
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A.
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B.
所有天体都相互吸引、相互绕转，处于不断运动之中
C.
总星系是目前人们所能观测到的宇宙部分
D.
银河系的中心部分是河外星系
【简答题】How old is “old”? The answer has changed over the years. Two hundred years ago，you were old at 35.At the beginning of the 20 th century，the average life span（平均寿命）was 45. In 1950，70-year-olds were re...
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