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【单选题】
在骨骼肌兴奋一收缩偶联中起关键作用的离子是A.
Na+
B.
K+
C.
Ca2+
D.
Mg2+
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反馈参考答案：
举一反三
【单选题】I felt ______ to death because I could make nothing of the chairman’s speech.
A.
tired
B.
bored
C.
exhausted
D.
frightened
【单选题】If______ to look after luggage for someone-else, inform the police at once.
A.
Asked
B.
to task
C.
asking
D.
having asked
【简答题】车蜡的选用应按照每种车蜡的()和()来区分。
【单选题】The police detective tried to find clues by ________ and repeatedly questioning the suspect.
A.
(A) careful
B.
(B) carefully
C.
(C) he is careful
D.
(D) to be careful
【单选题】The thieves ran away they caught sight of the police.
A.
as soon as
B.
because
C.
before
D.
although
【单选题】I felt ______ to death because I could make nothing of the chairman's speech.
A.
fatigued
B.
tired
C.
exhausted
D.
bored
【简答题】篮球明星科比·布赖恩特2003年因涉嫌科罗拉多州一个宾馆的年轻雇员而被指控。2003年7月18日,地方检察官赫伯特正式向法庭递交对科比的性侵犯起诉书,不过科比只承认和那个女孩通奸并说自己“无罪”。经过两次开庭之后,科比虽然不承认,但不否认发生了性关系。诉讼最终转为民事案件,科比支付100万美元来平息这场风波。新闻界对此名人犯罪案持续报道数月,成为一场典型的媒体狂热。就在科比被捕的日子里,原...
【单选题】Police are continuing their search for a teenager who has _____ disappeared.
A.
obviously
B.
undoubtedly
C.
mysteriously
D.
reluctantly
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