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问题 单项选择题

疏浚工程中，采用( )处理疏浚泥土，不仅能使泥土综合利用，为国民经济多方向服务，而且避免了疏浚泥土回淤航道的可能性，是一种较优的方案。

A．边抛法

B．水下抛泥法

C．吹填法

D．旁通法

答案

参考答案：C

选择题

关于做平抛运动的物体，下列说法正确的是（    ）

A．物体只受重力作用，做的是a=g的匀变速运动

B．初速度越大，物体在空间的运动时间越长

C．物体在运动过程中，在相等的时间间隔内水平位移相等

D．物体在运动过程中，在相等的时间间隔内竖直位移相等
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单项选择题

In the dining room of my grandfather’ s house stood his heavy clock. Meals in the dining room were a (21) for our four generations to become one. My grandfather’ s clock always stood like a trusted old family friend, (22) us playing jokes and tellingstories, which was already a (23) of our life.

When I was a child, the old clock interested me. I watched and listened to it during (24) I was surprised how at (25) times of the day, the clock would strike three times, six times or more, with a wonderful great (26) that echoed throughout the house. The clock chimed year after year, a part of my (27) , a part of my heart.

Even more (28) to me was my grandfather’s special action each day. He meticulously (29) the clock with a special key each day. The key was magic to me. It (30) our family’ s magnificent clock ticking and striking all year round.

22（）

A.comfortable 

B.hopeful 

C.wonderful 

D.skillful
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