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【简答题】
请从氢气、氧气、二氧化碳中选择适当的物质填空：空气中体积分数最大的是 ，极易燃烧，被认为是最清洁燃料的是 ．
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举一反三
【简答题】Whoever has skills should be properly rewarded___________(不管) his educational background.
【简答题】输入一个 5 行、 6 列的数组,将每一行的所有元素都除以该行上绝对值最大的元素,然后输出该数组。
【单选题】It is necessary that whoever ______ recently visited the country ______ this kind of test.A．has;
A.
33. It is necessary that whoever ______ recently visited the country ______ this kind of test. A．h as; pass
B.
has; passed
C.
have; pass
D.
has; passes
【单选题】Whoever is never ______ with the progress he has made will be a success.
A.
content
B.
proud
C.
abundant
D.
familiar
【单选题】Whoever has________sense knows that smoking is harmful to people’s health.
A.
． normal
B.
． general
C.
． ordinary
D.
． common
【单选题】Whoever has skills should be properly treated and rewarded ______ his educational background.
A.
due to
B.
regardless of
C.
let alone
D.
on account of
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