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搜题
【单选题】
主动脉瓣关闭发生于A.
快速射血期开始时；
B.
快速充盈期开始时；
C.
等容舒开始时；
D.
等容收缩期开始时；
E.
减慢充盈期开始时；
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皮皮学刷刷变学霸
举一反三
【单选题】This is not ______ pencil. It's______ pencil. [ ]
A.
me; he
B.
my; her
C.
I; his
D.
my; she
【简答题】已知某系统方框图如下图所示: 试求:( 1 )绘制该系统的开环尼奎斯特图;
【单选题】— Have you seen ____ pencil? I left it here this morning． —Is it _____black one? I think I saw it somewhere
A.
a; the
B.
the; the
C.
the; a
D.
a; a
【单选题】—Is this his pencil? —______. [ ]
A.
Yes, I am
B.
No, it isn't
C.
Yes, it's my pencil
【判断题】In some places the bridal chamber pranks are also called “heating thechamber.”
A.
正确
B.
错误
【简答题】列表属于可变类型，可以通过【】修改值。
【单选题】In some places the bride is supposed to wear a veil because (of)______.
A.
it was thought to protect the bride from evil spirits
B.
the bridegroom is not allowed to see the face of the bride on the wedding day
C.
it indicates the bride's innocence and purity
D.
both A and C
【简答题】People today are putting up many tall buildings without thinking of course. In some places the tall buildings are nearly strangling the cities.
【单选题】I left my pencil- box at home, so I didn’t have a pencil ______.
A.
to write
B.
for me to write
C.
writing
D.
to write with
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