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【单选题】
下列有关实验现象的描述错误的是( )A.
硝酸铵溶于水放出大量的热
B.
木炭在氧气中燃烧发出白光
C.
铁丝在氧气中燃烧生成黑色固体
D.
红磷在空气中燃烧产生大量
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举一反三
【简答题】Refer to the list and read the following introductory paragraphs. Then, in the space provided, write the number of the kind of introduction used in each paragraph. Each kind of introduction is used on...
【判断题】The respondents who are concerned about corporate governance standards drop by more than 20 percent this year.
A.
正确
B.
错误
【简答题】Throughout the world 36 million people are suffering from , which is more than the whole population of Australia. At present , is the fourth leading cause of death in the whole world , and t...
【单选题】At the end of 2013, wind power generated more than 4 percent of the nation's electricity, with some estimates suggest that figure could climb as high as 20 percent in the next two decades.
A.
NO CHANGE
B.
however
C.
and
D.
DELETE the underlined portion
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