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【简答题】
铜单质及其化合物在很多领域有重要的用途，如用来制造电线电缆，超细铜粉可应用于导电材料、催化剂等领域中，CuCl和CuCl 2 都是重要的化工原料，常用作催化剂、颜料、防腐剂和消毒剂等。 ⑴超细铜粉的某制备方法如下： ①[Cu(NH 3 ) 4 ]SO 4 中所含的化学键有 、 、 ， N、O、S三种元素的第一电离能大小顺序为： ＞ ＞ 。（填元素符号） ②NH 4 CuSO 3 中的金属阳离子的核外电子排布式为： 。 ③  NH 3 分子中N原子的杂化： 。 ④与SO 2 互为等电子体的分子有 （写一种）。 ⑵氯化亚铜（CuCl）的某制备过程是：向CuCl 2 溶液中通人一定量SO 2 ，微热，反应一段时间后即生成CuCl白色沉淀。 ①CuCl的晶胞结构如下图所示，其中Cl原子的配位数为 _________ 。 ②CuCl的熔点比CuO的熔点 。（填“高”或“低”）
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C.
Allowing for his young age, the boy is very courageous.
D.
Standing on the mountain-top, the whole village could be seen clearly.
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【单选题】In the following sentences, which one contains an unacceptable dangling modifier?
A.
Standing on the mountain-top, the whole village could be seen clearly.
B.
Allowing for his young age, the boy is very courageous.
C.
Judging from its appearance, the box must have been there for hundreds of years .
D.
Frankly speaking, the novel is terrible .
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【单选题】Which one contains a pair of expressions having different meanings?
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"fill in the form" and "fill out the form"
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"you burn up your house" and "you burn down your house"
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【单选题】在下列C语言程序中,可以用做变量名的是选项是
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相关题目：
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查看完整题目与答案
【单选题】In the following sentences, which one contains an unacceptable “v+ing”?
A.
Frankly speaking, the novel is terrible.
B.
Judging from its appearance, the box must have been there for hundreds of years.
C.
Allowing for his young age, the boy is very courageous.
D.
Standing on the mountain-top, the whole village could be seen clearly.
查看完整题目与答案
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A.
Standing on the mountain-top, the whole village could be seen clearly.
B.
Allowing for his young age, the boy is very courageous.
C.
Judging from its appearance, the box must have been there for hundreds of years .
D.
Frankly speaking, the novel is terrible .
查看完整题目与答案
【单选题】Which one contains a pair of expressions having different meanings?
A.
"fill in the form" and "fill out the form"
B.
"have a fat chance" and "have a slim chance"
C.
"you burn up your house" and "you burn down your house"
D.
"you wind up your watch" and "you wind up your speech"
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【单选题】在下列C语言程序中,可以用做变量名的是选项是
A.
123
B.
123F
C.
var
D.
*p
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