\int_0^{\pi \over 2} xsin2xdx=
A.
B.
C.
D.
- · 有3位网友选择 C,占比33.33%
- · 有3位网友选择 B,占比33.33%
- · 有2位网友选择 A,占比22.22%
- · 有1位网友选择 D,占比11.11%
A.
B.
C.
D.
In the world, there are over 2, 000 varieties of snakes, ______ are harmless to humans.
A.only they
B.most of them
C.most of which
D.which most
The word "revive" in paragraph 2 meant that
A.make active again
B.study again
C.go over again
D.find the value again
2 The earth moves around the sun.
A before B round
C after D over
听力原文:What time is the next train to Boston?
(2)
A.It's over there.
B.It's 9:30.
C.It's too late.
D.It sounds good.
Over the next 5 years, every phone number in the city will gain an extra
A.8 digits.
B.2 digits.
C.1 or 2 digits.
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