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【单选题】
据报道，化学家创造出一种物质“干水”，其每个颗粒含水95%，外层是SiO 2 ；干水吸收CO 2 的能力比普通清水。下列有关说法正确的是（   ）
A.
干水中的水分子不再运动
B.
用干水吸收CO 2 有助于减缓温室效应
C.
干水吸收CO 2 的过程只发生物理变化
D.
干水和干冰是同一种物质
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参考答案：
举一反三
【单选题】The atmosphere is as much a part of the earth as __ its soil and the water of its lakes, rivers and oceans.
A.
are
B.
is
C.
do
D.
has
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【单选题】fre gr
A.
gr eg
B.
e rgre ge r
C.
fgre gr
D.
g egre ger
查看完整题目与答案
【单选题】根据主、左视图选择正确的俯视图。( )
A.
(A)
B.
(B)
C.
(C)
D.
(D)
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【简答题】Venus is the second __1__ in distance from the sun and nearest to the Earth of all the planets in the __2__system. Except for the sun and the moon, Venus is the __3___object in the sky. The planet is ...
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【简答题】The Importance of Chopsticks (听力音频13) In 1 , respect has to be given to the elderly. Table manners are very 2 during a Chinese meal. Each time a 3 is served, everyone 4 to wait until the elder person ...
查看完整题目与答案
【简答题】A．movements B．activities C．procedures D．deeds
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【单选题】优级纯、分析纯、化学纯试剂的代号依次为( )。
A.
GR、CP、AR
B.
GR、AR、CP
C.
CP、GR、AR
D.
AR、GR、CP
E.
AR、CP、GR
查看完整题目与答案
【简答题】Find out the wrong use of comma in the following sentences. 1. Because, her alarm clock was broken, she was late for class. 2. The cat scratched at the door, while I was eating. 3. To get a seat you'd...
查看完整题目与答案
【多选题】事件营销一共包括以下( )类型
A.
热点事件
B.
危机公关
C.
公益活动
D.
名人效应
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【单选题】Estimate the pressure in the water pipe shown in this figure. The manometer is open to the atmosphere.
A.
10 kPa
B.
9 kPa
C.
8 kPa
D.
7 kPa
查看完整题目与答案
相关题目：
【单选题】The atmosphere is as much a part of the earth as __ its soil and the water of its lakes, rivers and oceans.
A.
are
B.
is
C.
do
D.
has
查看完整题目与答案
【单选题】fre gr
A.
gr eg
B.
e rgre ge r
C.
fgre gr
D.
g egre ger
查看完整题目与答案
【单选题】根据主、左视图选择正确的俯视图。( )
A.
(A)
B.
(B)
C.
(C)
D.
(D)
查看完整题目与答案
【简答题】Venus is the second __1__ in distance from the sun and nearest to the Earth of all the planets in the __2__system. Except for the sun and the moon, Venus is the __3___object in the sky. The planet is ...
查看完整题目与答案
【简答题】The Importance of Chopsticks (听力音频13) In 1 , respect has to be given to the elderly. Table manners are very 2 during a Chinese meal. Each time a 3 is served, everyone 4 to wait until the elder person ...
查看完整题目与答案
【简答题】A．movements B．activities C．procedures D．deeds
查看完整题目与答案
【单选题】优级纯、分析纯、化学纯试剂的代号依次为( )。
A.
GR、CP、AR
B.
GR、AR、CP
C.
CP、GR、AR
D.
AR、GR、CP
E.
AR、CP、GR
查看完整题目与答案
【简答题】Find out the wrong use of comma in the following sentences. 1. Because, her alarm clock was broken, she was late for class. 2. The cat scratched at the door, while I was eating. 3. To get a seat you'd...
查看完整题目与答案
【多选题】事件营销一共包括以下( )类型
A.
热点事件
B.
危机公关
C.
公益活动
D.
名人效应
查看完整题目与答案
【单选题】Estimate the pressure in the water pipe shown in this figure. The manometer is open to the atmosphere.
A.
10 kPa
B.
9 kPa
C.
8 kPa
D.
7 kPa
查看完整题目与答案
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