（10分）如图甲所示为一列简谐横波某一时刻的波形图，已知该波沿+x方向连续传播，

发布时间：2017-04-26 08:20 │ 来源：www.tikuol.com

题型：计算题

问题：

（10分）如图甲所示为一列简谐横波某一时刻的波形图，已知该波沿+x方向连续传播，传播速度为2m/s。求

（1）波形图上x=2m处的质点P的振动周期，并在图乙给出的坐标轴上画出从该时刻计时的振动图象（画出一个周期的图象，在坐标轴上须标明标度）

（2）如图丙所示的装置中，在探究共振现象的实验中发现；当作用在装置上MN间驱动力的频率与上述横波的频率相同时，MN间五个单摆中的D摆恰好发生共振。现测得D摆摆线长L₀=99.6cm。摆球的直径d=0.8cm，则当地重力加速度g为多少大？（结果取3位有效数字）

考点：波的图像

题型：计算题

完形填空。

     Our neighbour's son was getting married in 2009 at an out-of-town church, and my husband and I were
invited. We immediately rushed out to a   1  , and I bought a nice pink dress with a jacket. The dress was a
little   2 , but I had a month to go before the June 30 wedding and I would   3 a few pounds.
     June 29 came and, of course, I hadn't lost a single pound; in fact I had   4   two. But I   5   a nice new
girdle (紧身内衣) would cure everything. So on our way out of the city we   6   once again at the store. I ran
in and told the clerk I needed a   7   large girdle. The clerk found the box with the   8   girdle marked "LG", and
asked if I would like to try it on. "Oh, no, a large will fit just right. I   9   try it on."
     The next morning was rather hot, one of those thirty-four degree days, I suppose, so I  10   to get dressed
until about 45 minutes before time to go. I opened the box only to  11  a new girdle in a small size. Since it was
too late to find another one and the dress wouldn't  12 right without a girdle, a fight  13  in the hotel room
between me and the girdle. Have you ever tried to  14  20 pounds of potatoes into a five-pound bag? That's it.
Finally my husband,  15  like crazy, got hold of each side and shook me down into it. At once I put on the pink
dress, which didn't  16  very well with my red face, and was ready to go.
     Finally we got to the  17 . I heard one of the people say that they were having a High Mass (大弥撒). I
turned to my husband and asked, "What is a High Mass?" He shrugged his  18 .
      19 , I learned that this particular mass would last one hour, twenty-two minutes and eight and one half
seconds-the priest (神父) was going to bless  20  except my girdle.

( )1. A. hotel
( )2. A. long
( )3. A. put on
( )4. A. won
( )5. A. think
( )6. A. went
( )7. A. size
( )8. A. described
( )9. A. can’t
( )10. A. wanted
( )11. A. find
( )12. A. work
( )13. A. broke down
( )14. A. pull
( )15. A. laughing
( )16. A. do
( )17. A. town
( )18. A. shoulders
( )19. A. Happily
( )20. A. something

B. store
B. tight
B. gain
B. received
B. suggested
B. arrived
B. length
B. bought
B. needn’t
B. expected
B. notice
B. use
B. broke out
B. lay
B. crying
B. go
B. store
B. arms
B. Generally
B. nothing

C. church
C. little
C. lose
C. gained
C. demanded
C. stopped
C. width
C. sold
C. shouldn’t
C. tried
C. search
C. fit
C. broke up
C. push
C. shouting
C. work
C. church
C. head
C.Luckily
C. anything

D. office
D. perfect
D. miss
D. lost
D. figured
D. entered
D. depth
D. talked
D. mustn’t
D. waited
D. look
D. wear
D. broke away
D. shake
D. smiling
D. look
D. hotel
D. hands
D.Unfortunately
D. everything

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[写作内容]

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患者，男，56岁。突发右侧肢体无力并不能言语1月余来就诊，发病以来患者无吞咽困难，CT检查示“左侧大面积脑梗死”。失语症检查听理解、表达、复述、读理解、朗读、书写完全不能。

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