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【简答题】
付款单老师放假的索拉卡的的索拉卡房价的老是卡就
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反馈参考答案：
举一反三
【单选题】下列那组离子浓度增高时抑制心肌的兴奋性
A.
【Na+】+[Ca+]+[H+]
B.
[Na+]+[H+]
C.
[K+]+[Mg2+]+[H+]
D.
[Ca2+]+[Mg2+]+[H+]
E.
以上都不是
【单选题】The poor postman was fired before he could __________his fault.
A.
stand for
B.
change for
C.
prepare for
D.
account for
【单选题】—What do the letters “DOS” ______？ —Disk Operating System.
A.
call for
B.
stand for
C.
head for
D.
care for
【单选题】The letters PTO ______ parent-teacher organization.
A.
stand for
B.
call for
C.
head for
D.
care for
【单选题】The letters PLA __________ the People’s Liberation Army.
A.
mean for
B.
turn for
C.
long for
D.
stand for
【单选题】Students can _________ scholarship.
A.
apply for
B.
go after
C.
stand for
D.
follow up
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