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【单选题】
在骨骼肌兴奋一收缩耦联中起关键作用的离子是( )A.
Na+
B.
Mg+
C.
Cl-
D.
Ca2+
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【单选题】招警考试的流程通常包括笔试、心理素质测试、面试和体能测试等环节，其中心理素质测试是一个不可取代的环节，因为通过心理素质测试，可以了解报考者的个性心理，那些个性心理不适合的报考者将被淘汰。 以下哪项是上述论证最可能假设的?（ ）
A.
个性心理是确定录用报考者的最重要因素
B.
报考者的个性心理很难通过招考的其他环节来测试出来
C.
心理素质测试的唯一目的就是了解报考者的个性心理
D.
在招考的各环节中，心理素质测试比其他环节更重要
【单选题】听力原文：W: You will love this apartment. It's well-furnished and spacious. Besides, it has a wonderful view. M: Yes, it certainly has a good view and plenty of space, but I have a sleeping problem and it...
A.
It hasn't any furniture.
B.
It has a view of the highway.
C.
There may be continual traffic noise.
D.
There aren't enough bedrooms for their families.
【单选题】Everything，including the clothes in the closets，______stolen from the apartment.
A.
were
B.
have been
C.
was
D.
are
【单选题】听力原文：M: How much money will I have to spend to rent an apartment in America? I only have $500 a month. W: Your rent should ha about a quarter of that. Q: How much should the man's rent be? (16)
A.
It's $500.
B.
It's $125.
C.
It's $25.
D.
It's $400.
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