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【单选题】
镁条在空气中燃烧后，其生成物中可能含有的物质是（　　）
A.
MgCO 3 、MgO、Mg 3 N 2
B.
Mg（OH） 2 、MgO、MgCO 3
C.
MgO、Mg 3 N 2 、C
D.
Mg 2 N 3 、C、MgO
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举一反三
【单选题】引起肛瘘最常见的原发病是
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痔疮
B.
直肠息肉
C.
肛裂
D.
直肠肛周围脓肿
E.
直肠癌
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【单选题】Please let us know yesterday, my daughter.
A.
where did you go
B.
which place you go
C.
did you go to the mall
D.
if you went to the mall
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【单选题】发酵工业中的混菌培养是一种什么关系?
A.
互生
B.
共生
C.
寄生
D.
拮抗
E.
捕食
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【单选题】—Did you eat yet? —______.
A.
Yes, let's have lunch together
B.
No, let's go there sometime
C.
No, about an hour ago
D.
Yes, about an hour ago
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【单选题】---Could you let me know ________ yesterday ? ---Because the traffic was heavy .
A.
why did you come late
B.
why you came late
C.
why do you come late
D.
why you come late
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【单选题】------Did the policeman let you in? ------No, ________ I told him who I was．
A.
Unless
B.
Once
C.
as though
D.
even if
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【单选题】引起肛瘘最常见的原发病是
A.
肛裂
B.
直肠肛管周围脓肿
C.
痔
D.
臀部的疗
E.
直肠癌
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【单选题】'______ you ever _______ the film?' 'Yes, let me tell you something about it.' [     ]
A.
Did, see
B.
Will, see
C.
Have, seen
D.
Do, see
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【单选题】---Can you let me know yesterday? ---Because the traffic was bad.
A.
why did you come late
B.
why you came late
C.
why do you come late
D.
why you come late
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【单选题】—_____ did you always get the first place? Could you let me know? —Only because I like it and practice every day. [     ]
A.
What
B.
When
C.
Where
D.
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【单选题】引起肛瘘最常见的原发病是
A.
痔疮
B.
直肠息肉
C.
肛裂
D.
直肠肛周围脓肿
E.
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【单选题】Please let us know yesterday, my daughter.
A.
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C.
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【单选题】—Did you eat yet? —______.
A.
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B.
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C.
No, about an hour ago
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【单选题】---Could you let me know ________ yesterday ? ---Because the traffic was heavy .
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【单选题】------Did the policeman let you in? ------No, ________ I told him who I was．
A.
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B.
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C.
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查看完整题目与答案
【单选题】引起肛瘘最常见的原发病是
A.
肛裂
B.
直肠肛管周围脓肿
C.
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D.
臀部的疗
E.
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查看完整题目与答案
【单选题】'______ you ever _______ the film?' 'Yes, let me tell you something about it.' [     ]
A.
Did, see
B.
Will, see
C.
Have, seen
D.
Do, see
查看完整题目与答案
【单选题】---Can you let me know yesterday? ---Because the traffic was bad.
A.
why did you come late
B.
why you came late
C.
why do you come late
D.
why you come late
查看完整题目与答案
【单选题】—_____ did you always get the first place? Could you let me know? —Only because I like it and practice every day. [     ]
A.
What
B.
When
C.
Where
D.
Why
查看完整题目与答案