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【单选题】
在生活、生产及化学研究中，人们经常需要根据不同原子、分子或离子的某些特征反应对物质进行检验，以确定物质的组成。下列有关物质检验的说法止确的是 [     ]
A.
MnO 2 、CuO、Fe三种物质的粉末都是黑色的，用稀盐酸不能将它们区别开
B.
(NH 4 ) 2 SO 4 、K 2 SO 4 、NH 4 Cl三种物质不能用一种试剂通过化学反应区别开
C.
可以用焰色反应来证明某溶液是否为钠盐
D.
用湿润的KI淀粉试纸可以检验氯化氧气体中是否含有氯气
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参考答案：
举一反三
【单选题】听力原文：M: When are we supposed to submit our project proposals, Jane? W: They are due by the end of the week. We've only two days left. We'll just have to hurry. What does the woman mean?
A.
The deadline is drawing near.
B.
She can't meet the deadline.
C.
She turned in the proposals today.
D.
They are two days ahead of time.
查看完整题目与答案
【单选题】如果说服装人体是学画服装画的基础,那么( )人体动态草图是基础中的基础。
A.
人体动态草图
B.
人物速写
C.
服装款式图
D.
素描
查看完整题目与答案
【单选题】关于大学生在推动两岸关系上的错误说法是( )。
A.
为推动两岸关系和平发展、实现祖国统一作出自己的贡献。
B.
担当起实现民族伟大复兴的历史重任
C.
感悟两岸关系和平发展的潮流
D.
大学生是没有任何作为的
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【单选题】听力原文：W: Excuse me. I was in line here first. M: Oh, I'm sorry. I didn't realize that you were waiting. Q: What will the man probably do? (18)
A.
Accept the woman's apology.
B.
Allow the woman to go ahead of him.
C.
Apologize to the woman.
D.
Go to the front of the line.
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【单选题】Machel: Can you come to my house for lunch on Friday evening? Tom: Oh, I'm sorry. I can't make it. Maehel: ______.
A.
How about tomorrow then?
B.
What do you want to make?
C.
OK. See you then.
D.
No problem.
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【单选题】听力原文：M: Shall we go to the movie this evening? W: Oh, I'm sorry. I'm afraid I can't. I'm seeing my mum off at the airport at 7:30. Q: What will the woman do this evening? (4)
A.
Meet her mum at the airport.
B.
Say Bye-bye to her mum at the airport.
C.
Fly to another city with her mum.
D.
Go to the movie with her mum.
查看完整题目与答案
【单选题】In a project structure, when employees finish a project they ________.
A.
return to their department
B.
return to a different division
C.
move on to another project
D.
return to their regular work
查看完整题目与答案
【单选题】Oh, I'm sorry. I do apologize _____giving you the wrong dish.
A.
at
B.
with
C.
for
D.
off
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【单选题】The project is the middle of a long-term project when a major error is discovered by the develop team This error can be fixed by implementing a large change to the scope of the project.This change cou...
A.
Ananyze the change request and present it to the change control boar
B.
Implement the change request and inform the stakeholders afterwards.
C.
Implement the change request and present it to the change control board afterwards.
D.
Analyze the change request and present it to the steering committe
查看完整题目与答案
【单选题】—When are you leaving for Chicago? —As soon as we ________ the project.
A.
are completing
B.
completed
C.
will complete
D.
complete
查看完整题目与答案
相关题目：
【单选题】听力原文：M: When are we supposed to submit our project proposals, Jane? W: They are due by the end of the week. We've only two days left. We'll just have to hurry. What does the woman mean?
A.
The deadline is drawing near.
B.
She can't meet the deadline.
C.
She turned in the proposals today.
D.
They are two days ahead of time.
查看完整题目与答案
【单选题】如果说服装人体是学画服装画的基础,那么( )人体动态草图是基础中的基础。
A.
人体动态草图
B.
人物速写
C.
服装款式图
D.
素描
查看完整题目与答案
【单选题】关于大学生在推动两岸关系上的错误说法是( )。
A.
为推动两岸关系和平发展、实现祖国统一作出自己的贡献。
B.
担当起实现民族伟大复兴的历史重任
C.
感悟两岸关系和平发展的潮流
D.
大学生是没有任何作为的
查看完整题目与答案
【单选题】听力原文：W: Excuse me. I was in line here first. M: Oh, I'm sorry. I didn't realize that you were waiting. Q: What will the man probably do? (18)
A.
Accept the woman's apology.
B.
Allow the woman to go ahead of him.
C.
Apologize to the woman.
D.
Go to the front of the line.
查看完整题目与答案
【单选题】Machel: Can you come to my house for lunch on Friday evening? Tom: Oh, I'm sorry. I can't make it. Maehel: ______.
A.
How about tomorrow then?
B.
What do you want to make?
C.
OK. See you then.
D.
No problem.
查看完整题目与答案
【单选题】听力原文：M: Shall we go to the movie this evening? W: Oh, I'm sorry. I'm afraid I can't. I'm seeing my mum off at the airport at 7:30. Q: What will the woman do this evening? (4)
A.
Meet her mum at the airport.
B.
Say Bye-bye to her mum at the airport.
C.
Fly to another city with her mum.
D.
Go to the movie with her mum.
查看完整题目与答案
【单选题】In a project structure, when employees finish a project they ________.
A.
return to their department
B.
return to a different division
C.
move on to another project
D.
return to their regular work
查看完整题目与答案
【单选题】Oh, I'm sorry. I do apologize _____giving you the wrong dish.
A.
at
B.
with
C.
for
D.
off
查看完整题目与答案
【单选题】The project is the middle of a long-term project when a major error is discovered by the develop team This error can be fixed by implementing a large change to the scope of the project.This change cou...
A.
Ananyze the change request and present it to the change control boar
B.
Implement the change request and inform the stakeholders afterwards.
C.
Implement the change request and present it to the change control board afterwards.
D.
Analyze the change request and present it to the steering committe
查看完整题目与答案
【单选题】—When are you leaving for Chicago? —As soon as we ________ the project.
A.
are completing
B.
completed
C.
will complete
D.
complete
查看完整题目与答案
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