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【单选题】
对于反应: [Al(H 2 O) 6 ] 3+ +H 2 O=[Al(OH)(H 2 O) 5 ] 2+ +H 3 O + ,正确的叙述是 ( )。
A.
[Al(H 2 O) 6 ] 3+ 是碱， H 3 O + 是它的共轭酸
B.
[Al(H 2 O) 6 ] 3+ 是碱， H 2 O 是它的共轭酸
C.
[Al(H 2 O) 6 ] 3+ 是酸， [Al(OH)(H 2 O) 5 ] 2+ 是它的共轭碱
D.
[Al(H 2 O) 6 ] 3+ 是酸， H 2 O 是它的共轭碱
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参考答案：
举一反三
【单选题】Read the following sentences in each group, and decide which sentence is th best topic sentence.
A.
A lunar eclispse is an omen of a coming disaster.
B.
Supersticions have been around forever.
C.
People hold many superticious bliefs about the moon.
D.
Is made of green cheese.
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【单选题】Which of the following sentence is right? I wonder _________.
A.
who broke the window
B.
whose pen is this?
C.
which room I will live
D.
what’s the population of China
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【单选题】企业财务管理体制主要明确的制度是（ ）。
A.
企业治理结构的权限、责任和利益的制度
B.
企业各财务层级财务权限、责任和利益的制度
C.
企业股东会、董事会权限、责任和利益的制度
D.
企业监事会权限、责任和利益的制度
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【单选题】Warmer air is able to hold more water ___________ than cold air and so has a higher humidity.
A.
vapor
B.
lane
C.
radar
D.
apart
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【单选题】在国际上，施工企业项目经理是企业任命的一个项目的项目管理班子的负责人，其主要任务是( )。
A.
负责项目的资金落实情况
B.
负责项目的技术管理工作
C.
代表企业法定代表人在项目上行使法律上赋予的权限
D.
项目目标的控制和组织协调
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【单选题】Why is it warmer on the side of a hill than on the valley floor?
A.
Because warmer air lifts up and off the valley floor, especially on clear nights.
B.
Because there is difference between the temperature.
C.
Because cold wind blows down to the valley.
D.
No information is mentioned in the passage.
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【单选题】Which sentence about the differences between British and American English is NOT true?
A.
There are some small spelling differences.
B.
Most of the words are the same.
C.
There are quite a few differences in grammar.
D.
There are lots of differences in spoken English.
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【单选题】Read the following sentences in each group, and decide which sentence is th best topic sentence.
A.
The history of astronomy is interesting.
B.
Ice age people recorded the appearance of moons by making scratches in animal bones.
C.
For example, Stonehenge in Britain, built 3500 years ago to track the movement of the sun.
D.
Ancient people observed and recorded lunar and solar events in different ways.
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【多选题】乡村旅游开发的多样化趋势主要表现在:
A.
景观开发的多样性
B.
参与形式的多样化
C.
投资主体的多样化
D.
利益相关者多样化
E.
研究范式多样化
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【单选题】Warmer air is able to hold more water ( ) than cold air and so has a higher humidity.
A.
vapor
B.
mount
C.
element
查看完整题目与答案
相关题目：
【单选题】Read the following sentences in each group, and decide which sentence is th best topic sentence.
A.
A lunar eclispse is an omen of a coming disaster.
B.
Supersticions have been around forever.
C.
People hold many superticious bliefs about the moon.
D.
Is made of green cheese.
查看完整题目与答案
【单选题】Which of the following sentence is right? I wonder _________.
A.
who broke the window
B.
whose pen is this?
C.
which room I will live
D.
what’s the population of China
查看完整题目与答案
【单选题】企业财务管理体制主要明确的制度是（ ）。
A.
企业治理结构的权限、责任和利益的制度
B.
企业各财务层级财务权限、责任和利益的制度
C.
企业股东会、董事会权限、责任和利益的制度
D.
企业监事会权限、责任和利益的制度
查看完整题目与答案
【单选题】Warmer air is able to hold more water ___________ than cold air and so has a higher humidity.
A.
vapor
B.
lane
C.
radar
D.
apart
查看完整题目与答案
【单选题】在国际上，施工企业项目经理是企业任命的一个项目的项目管理班子的负责人，其主要任务是( )。
A.
负责项目的资金落实情况
B.
负责项目的技术管理工作
C.
代表企业法定代表人在项目上行使法律上赋予的权限
D.
项目目标的控制和组织协调
查看完整题目与答案
【单选题】Why is it warmer on the side of a hill than on the valley floor?
A.
Because warmer air lifts up and off the valley floor, especially on clear nights.
B.
Because there is difference between the temperature.
C.
Because cold wind blows down to the valley.
D.
No information is mentioned in the passage.
查看完整题目与答案
【单选题】Which sentence about the differences between British and American English is NOT true?
A.
There are some small spelling differences.
B.
Most of the words are the same.
C.
There are quite a few differences in grammar.
D.
There are lots of differences in spoken English.
查看完整题目与答案
【单选题】Read the following sentences in each group, and decide which sentence is th best topic sentence.
A.
The history of astronomy is interesting.
B.
Ice age people recorded the appearance of moons by making scratches in animal bones.
C.
For example, Stonehenge in Britain, built 3500 years ago to track the movement of the sun.
D.
Ancient people observed and recorded lunar and solar events in different ways.
查看完整题目与答案
【多选题】乡村旅游开发的多样化趋势主要表现在:
A.
景观开发的多样性
B.
参与形式的多样化
C.
投资主体的多样化
D.
利益相关者多样化
E.
研究范式多样化
查看完整题目与答案
【单选题】Warmer air is able to hold more water ( ) than cold air and so has a higher humidity.
A.
vapor
B.
mount
C.
element
查看完整题目与答案
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