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【判断题】
物质生产劳动的实践是人类最基本的实践活动.A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】My mother will not allow me to go, ______.
A.
my father will either
B.
either my father will
C.
neither will my father
D.
nor my father will
【单选题】— What's your father? — ____. [ ]
A.
My father is an engineer
B.
My father's name is Wu Wei
C.
This is my father
【单选题】A、B两小球都在水平面上做匀速圆周运动，A球的轨道半径是B球轨道半径的2倍，A的转速为30 r/min，B的转速为15 r/min.则两球的向心加速度之比为( )
A.
1 ∶ 1
B.
2 ∶ 1
C.
4 ∶ 1
D.
8 ∶ 1
【单选题】Which of the following statements is TRUE of 'my father' ?
A.
My father was an optimist.
B.
My father didn' t like to take any preventive measures.
C.
My father often visited doctors.
D.
My father was wise enough to mind his own health.
【单选题】Mr. Brown is a friend __________. [ ]
A.
of father
B.
my father's
C.
of my father's
D.
my father
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