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【单选题】
如图所示，A、B两物体叠放在一起，以相同的初速度上抛（不计空气阻力）。下列说法中正确的是（）A.
在上升和下降过程中A对B的压力一定为零
B.
上升过程中A对B的压力大于A物体受到的重力
C.
下降过程中A对B的压力大于A物体受到的重力
D.
在上升和下降过程中A对B的压力等于A物体受到的重力
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反馈参考答案：
举一反三
【判断题】贝多芬1770年出生于法国，超凡的音乐才能和狂热的创作激情，使他成为音乐世界的普罗米修斯，他成了正义的化身并给人以光明和希望。最能体现其交响乐成就的当属《命运交响曲》。
A.
正确
B.
错误
【简答题】What kind of bus company is the Greyhound bus companyIt is ______ bus company.
【单选题】—The little girl ______ her seat to an old man on the bus. —What a kind girl! [ ]
A.
brought
B.
offered
C.
provided
D.
lent
【单选题】以下对概率的理解,正确的是:
A.
一定条件下随机事件发生可能性大小的度量指标
B.
在多次观察中发生该事件次数与观察总次数的比值
C.
一般用P表示,取值0
D.
一定条件下某事件的发生概率是变化的
E.
某事件的发生频率应该等于其发生概率
【单选题】It can be inferred from the passage that, had the Civil Rights movement not prompted an investigation of prison conditions, ______.
A.
states would never have established asylums for the mentally ill
B.
new treatments for major mental illness would have likely remained untested
C.
the Civil Rights movement in America would have been politically ineffective
D.
conditions in mental hospitals might have escaped judicial scrutiny
【单选题】下列选项中关于概率说法错误的是()
A.
概率是指某随机事件发生可能性的大小 时,则该事件为小概率事件
B.
概率用符号P表示
C.
某随机事件发生的频率就是概率
D.
某随机事件发生的概率P≤0.05或P≤0.014.
E.
概率的取值范围为0-1
【单选题】— The little girl her seat to the old man on the crowded bus. — What a kind girl! [ ]
A.
took
B.
brought
C.
borrowed
D.
offered
【单选题】It can be inferred from the passage that, had the Civil Rights movement not prompted an investigation of prison conditions, ______.
A.
states would never have established asylums for the mentally iii
B.
new treatments for major mental illness would have likely remained untested
C.
the Civil Rights movement in America would have been politically ineffective
D.
conditions in mental hospitals might have escaped judicial scrutiny
【单选题】What kind of transport does her husband prefer to take?
A.
By ship.
B.
By bus.
C.
By train.
D.
By air.
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