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题型: 单选题
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单选题

关于下列图示的说法中正确的是

[ ]

A图①是从食盐水中提取氯化钠

B图②为电解硫酸铜溶液的装置,一定时间内两电极产生单质的物质的量之比一定为1:1

C图③装置可完成比较乙酸、碳酸和硅酸的酸性强弱

D图④仪器可用于量取20.00mL0.10mol·L-1的硫酸

正确答案

C
1
题型:简答题
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单选题

For there ____________successful communication, there must be attentiveness and involvement in the discussion itself by all present.

A.is
B.to be
C.will be
D.being

正确答案

B

解析

For there to be successful communication 是 for + there to be的结构,表示目的。there后接being时,前面不用for。there being常表示原因。

1
题型:简答题
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单选题

She wondered if she could have the opportunity to spend ___________here so that she could learn more about the city.

A.sometimes
B.some time
C.sometime
D.some times

正确答案

B

解析

some time是“一些时间,一段时间”。A.some times是“有时”;C.sometime是“某时,日后”;D.some times是“几次”,一般应说several times。

1
题型:简答题
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单选题

I'd rather you (would go) by train, because I (can't bear) the idea of (your being) in an air plane in (such) bad weather.

A.would go
B.can''t bear
C.your being
D.Such

正确答案

A

解析

would go改为went。I’d rather=I would rather,后面接从句时,从句中的谓语动词要用虚拟语气,形式是用动词的过去式。

1
题型:简答题
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单选题

Mercury's velocity is (so much) greater than (the Earth's) that it completes more than four revolutions around the Sun in the time (that) takes the Earth to complete (one).

A.so much
B.the Earth''s
C.that
D.one

正确答案

C

解析

that改为(that)it。(that)it takes the Earth to complete one是定语从句,修饰先行词 time,其中 it 是形式主语,to complete one是实际主语,关系代词that是takes的宾语,可以省略。

下一知识点 : 实验室制取蒸馏水
百度题库 > 高考 > 化学 > 蒸馏

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