根据要求作图：（1）如图1所示，请画出小球所受重力的示意图．（2）如图2所示

发布时间：2017-07-19 21:30 │ 来源：www.tikuol.com

题型：操作题

问题：

根据要求作图：

（1）如图1所示，请画出小球所受重力的示意图．

（2）如图2所示，一束光线与水平面成30°角从空气斜射到水面时，发生反射和折射，请你在图中画出它的反射光线和折射光线的大致方向．

（3）如图3所示，根据通电螺线管的电流方向，标出电源的正、负极和通电螺线管两端的磁极．

考点：重力的示意图光的折射的光路图安培定则（右手螺旋定则）

题型：操作题

完形填空。

     Once when I was a teenager, my father and I were standing in line to buy tickets for the circus (马戏团).
This is about the family standing ahead of us.
     The family had eight children. Their clothes were not expensive but  1 .
     The children were well behaved. They stood in line, two by two behind their parents, holding hands.
They were excitedly talking about the clowns (小丑), elephants and other acts they would see that night.
You could  2 that they had never been to the circus before.
     The ticket lady asked the father how many tickets he wanted. He  3 replied, "I want eight children's tickets
and two adult tickets please, so I can take my  4 to the circus."
     The ticket lady quoted (报) the price. The man's wife let go of his hand. The man's lip started to quiver
(颤抖).He leaned (靠) toward  5 and asked again, "How much did you say?" The ticket lady quoted the price
again. The man didn't have 6   money. How was he supposed to tum and tell his eight kids that he couldn't
take them to the circus?
      My dad put his hand into his pocket, pulled out a $20 bill and  7 it on the ground. (And we weren't rich!)
Then he  8 down, picked up the bill, tapped the man on the shoulder and said, ''Excuse me, sir, this  9  out of
your pocket."
     The man knew  10 was going on. He looked into my dad's eyes, held my dad's hand in his, and took the
$20 bill. With a tear in his eye, he replied,"Thank you, thank you, sir. This really  11 a lot to me and my
family."
      My father and I went back to our car and drove home. We didn't get to see the circus that night, but we
didn't  12 .

( )1. A. clean
( )2. A. find
( )3. A. suddenly
( )4. A. wife
( )5. A. her
( )6. A. much
( )7. A. missed
( )8. A. got
( )9. A. moved
( )10. A. what
( )11. A. takes
( )12. A. worry

B. large
B. agree
B. proudly
B. children
B. him
B. any
B. lost
B. reached
B. broke
B. how
B. costs
B. care

C. thick
C. tell
C. safely
C. team
C. them
C. enough
C. passed
C. went
C. fell
C. when
C. owns
C. know

D. warm
D. decide
D. quietly
D. family
D. us
D. some
D. dropped
D. looked
D. took
D. who
D. means
D. show

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A.可保立苏汤

B.柴胡细辛汤

C.归脾汤

D.杞菊地黄汤

E.二陈汤

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A.6小时后

B.4小时后

C.3小时后

D.2小时后

E.2小时内

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A.腹肌紧张

B.腰大肌试验阳性

C.结肠充气试验阳性

D.闭孔肌试验阳性

E.麦氏点固定性压痛

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