关于平抛运动，下列说法中正确的是（） A．平抛物体在运动过程中，其加速度和水平

发布时间：2017-05-25 07:06 │ 来源：www.tikuol.com

题型：选择题

问题：

关于平抛运动，下列说法中正确的是（　　）

A．平抛物体在运动过程中，其加速度和水平速度保持不变

B．平抛运动可以分解为水平方向的匀加速运动和竖直方向的自由落体运动

C．平抛物体是做曲线运动的，因此它不可能是匀变速运动

D．平抛物体水平飞行的距离只与初速度有关

考点：平抛运动

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某旅行社组织了以下路线的旅游，按旅游地所处纬度由低到高的正确顺序是

A．黄山、杭州、桂林、三亚

B．日月潭、中山陵、秦始皇兵马俑、白头山天池

C．嵩山、华山、泰山、峨眉山

D．长江三峡、延安、井冈山、北京故宫

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完形填空。

     It was a cold winter morning. Half asleep at the train station, I stared into the distance,   1   for the train to
take me to my   2   in Boston. The world was quiet. The very few people on the street kept to themselves,   3
their steaming cups of coffee.
     Reaching into my pocket as the   4   was approaching, my numb hand searched for the $20 bill to pay my
fare. The pocket was   5 ! I searched through my bag and then I felt   6  . Unless the money dropped from the
sky, I'd be   7   there.
     "What' s the matter?" A short, elderly man stood before me.
    "Oh, nothing...Well, I   8   my money and now I can't pay for the ticket. I'm going to   9   my match class,
and the train is leaving."
     "Here, use this."
     The man held a $20 bill. I looked up,  10 . People just didn't do that anymore. Everyone worried about their
own  11 , rarely stopping to think about others, especially teenage strangers.
     "Thank you, but no, I can't."
     " 12  it-go!" The man pushed me  13  the train. I bought a round-trip ticket, and he refused the change I  14
to give him back. I did not know what to say-a million thoughts raced through my mind, yet I stood  15 .
     For the train ride I was silent. I began to see the world through  16  eyes. That man made a difference with
such a simple  17 . A week later I was at the train station again, with an extra $20  18  I saw the man. And there
he was.
     "Excuse me, sir, I believe I owe you this." I  19  the money into his hand.
     Failing to refuse, he said, "Just remember to do the same for someone in your shoes someday." I smiled,
content.
     The elderly man is my hero. For many, heroes are famous, but my hero is a  20  stranger who taught me a
lesson in life. I will never forget his kindness.

( )1. A. watching
( )2. A. home
( )3. A. serving
( )4. A. chance
( )5. A. deep
( )6. A. hopeless
( )7. A.blocked
( )8. A.wasted
( )9. A.miss
( )10. A.frightened
( )11. A.problems
( )12. A.Seize
( )13. A.in
( )14. A.offered
( )15. A.unconsciously
( )16. A.curious
( )17. A.task
( )18. A.so that
( )19. A.dropped
( )20. A.giving

B. looking
B. class
B. carrying
B. crowd
B. empty
B. useless
B. drawn
B. counted
B. skip
B. disturbed
B. complaints
B. Get
B. beyond
B. managed
B. silently
B. changed
B. act
B. even if
B. pushed
B. encouraging

C. reaching
C. office
C. minding
C. driver
C. messy
C. relieved
C. stuck
C. spent
C. fail
C. surprised
C. positions
C. Catch
C. toward
C. happened
C. seriously
C. bright
C. example
C. now that
C. pressed
C. promising

D. arranging
D. factory
D. making
D. train
D. tight
D. dissatisfied
D. tied
D. lost
D. stop
D. concerned
D. challenges
D. Take
D. on
D. attempted
D. uncomfortably
D. widened
D. performance
D. in case
D. placed
D. respecting

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桨轴承机构国际上常见的有两种类型，一种是（），一种是（）轴承，实现变桨。

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涡轮往复式发动机的废气门控制什么？

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指定商品期货交割仓库主要考虑______。

A．仓库所在地区的生产或消费集中程度

B．仓库的储存条件

C．运输条件

D．质检条件

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关于平抛运动，下列说法中正确的是（ ） A．平抛物体在运动过程中，其加速度和水平

问题：

关于平抛运动，下列说法中正确的是（） A．平抛物体在运动过程中，其加速度和水平