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【单选题】
大白菜属于( ) 科,( )年生蔬菜
A.
十字花、一
B.
十字花、二
C.
菊、一
D.
菊 、二
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【单选题】下列各函数中 , 在(-∞,0) 内为减函数的是 ( )
A.
y=7x+2
B.
y=
C.
y =-x 2 +2
D.
y =2x 2 -1
【单选题】金曜日に飲み会があるんですけど、よかったら、( )。
A.
一緒に行く?
B.
一緒に行ってください。
C.
一緒に行きませんか。
D.
一緒に行こうよ。
【单选题】—I hear Ted got hurt badly in the car accident yesterday. — It's true. His careless driving was the of the accident. [     ]
A.
reason
B.
cause
C.
excuse
D.
answer
【单选题】The writer described Hamel as the best pilot but criticized his assistant for his carelessness in the flight.
A.
True
B.
False
C.
Not mentioned
【单选题】The deadly accident _____ his careless driving.
A.
resulted in
B.
resulted of
C.
resulted from
D.
led to
【单选题】The only means to achieve success ___ to appeal to arms.
A.
is
B.
are
C.
were
D.
have
【单选题】Mr. Johnson ______ his boss ______ his careless mistake.
A.
apologized; about
B.
apologized to; about
C.
apologized to; for
D.
apologized; for
【单选题】下列各函数中,在(-∞,0)内为减函数的是?
A.
y=7x + 2
B.
y=  -
C.
y = - x 2 +2
D.
y =2x 2 -1
【单选题】下列各函数中,在(- ∞,0)内为减函数的是
A.
y=7x+2
B.
y=-
C.
y=- +2
D.
y=2 - 1
【单选题】下列各函数中,在(-∞,0)内为减函数的是( )
A.
y=7+2x
B.
y=-
C.
y=- +2
D.
y=2 +1
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