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【单选题】
在反应：C+CO 2 ＝2CO中，可使反应速率增大的措施是 ( ) ①增大压强 ②升高温度 ③通入CO2 ④增加碳的量 ⑤降低压强A.
①②③
B.
②③④⑤
C.
①②③④
D.
②③④
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反馈参考答案：
举一反三
【单选题】拉斯韦尔的 “5W”模型,解释为
A.
who, say what, in which channel, to whom, with what effects
B.
who, in which channel, say what, to whom, with what effects
C.
who, to whom, say what, in which channel, with what effects
D.
who, to whom, in which channel, say what,with what effects
【简答题】...cucumbers
【单选题】The fifth paragraph of the passage mainly discusses
A.
the reproduction of sea cucumbers.
B.
the food sources of sea cucumbers.
C.
the eating habits of sea cucumbers.
D.
threats to sea cucumbers' existence.
【单选题】He could no longer contain his .
A.
hostility
B.
previous
C.
affectionate
D.
excessive
E.
secure
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