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举一反三
【单选题】自从新文学运动以来，散文一直是文坛的主力，虽然不如诗与小说那么勇于实验而变化多端，却也不像这两种文体那么历经欧美风雨而迷惑于各种主义、各种门派。 这段文字的主要意思是( )。
A.
散文的发展比较稳健，受外国影响较小
B.
新文学运动以后，诗与小说受欧美影响很大
C.
诗与小说不断变化，而且勇于进行新的探索
D.
新文学运动以后，散文一直占据着文坛的主导地位
【单选题】绿色环保是化学实验的追求，下列操作不会引起空气污染的是
A.
用浓盐酸洗涤加热KMnO4制氧气的试管
B.
用稀硝酸洗涤做过银镜实验的试管
C.
硝酸亚铁和硫酸废液一同倒入废液缸
D.
将打破的水银温度计插入硫粉中
【单选题】Every year more than half a million American kids have drainage(排泄) tubes surgically implanted in their ears to combat persistent infections. The procedure, known as tympanostomy, may not be as (62) a...
A.
[A] feeling [C] health
B.
[B] hearing [D] memory
【单选题】Section BDirections: There are 2 passages in this section．Each passage is followed by some questions or unfinished statements．For each of them there are four choices marked A, B, C and D．You should de...
A.
could not easily be absorbed by the human body
B.
were potentially harmful to people's health
C.
were too expensive for daily consumption
D.
could not provide any cure for vitamin deficiencies
【单选题】下列有关排泄的说法正确的是
A.
肾脏疾病会使肾小球滤过率明显下降，对肾小管主动分泌和重吸收功能影响不大
B.
若肾清除率小于肾小球滤过率，说明可能有肾小管分泌
C.
改变尿液的pH，主要会使肾重吸收发生变化
D.
肾小管重吸收只有被动扩散过程
E.
汗腺排泄和肾排泄是药物最主要的两条排泄途径