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【单选题】
镁带在CO 2 中燃烧的反应为2Mg+CO 2 点燃 . 2MgO+C则下列叙述中错误的是（ ）A.
CO 2 具有氧化性，镁带有还原性
B.
物质只有跟氧气接触，燃烧
C.
这是一个置换反应
D.
镁带着火，不能用二氧化碳灭
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举一反三
【单选题】Tom and his brother like _______ in that river. Which of the following is WRONG? [ ]
A.
going swimming
B.
going for swimming
C.
going for a swim
D.
to go swimming
【简答题】捐躯赴国难, 。
【简答题】阅读短文，选择正确答案。 Hundreds of years ago there lived a king in a small country. He liked swimming. When summer came, he always went to another palace by a forest with his guards (卫兵) and returned to the cap...
【单选题】Mike participated in all the following activities EXCEPT ______
A.
hiking
B.
canoeing
C.
swimming
D.
camping
【单选题】Aunt Zhou reminded us ______ the danger of ________ in that river.
A.
of;swim
B.
with;swim
C.
of;swimming
D.
with;swimming
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