一把钥匙能打开天下所有的锁，这样的万能钥匙是不可能存在的。可_爱下问搜题

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问题单项选择题

一把钥匙能打开天下所有的锁，这样的万能钥匙是不可能存在的。可见()。

A．任何钥匙都必然有它打不开的锁

B．至少有一把钥匙必然打不开天下所有的锁

C．至少有一把锁天下所有的钥匙都必然打不开

D．至少有一把钥匙可能打不开天下所有的锁

答案

参考答案：A

解析：题于换句话说可以是：“不可能存在能打开天下所有的锁的万能钥匙”，“不可能”一“必然不”，因此题干相当于“必然不存在有的钥匙能打开天下所有的锁”，等值于“必然所有的钥匙都有它打不开的锁”，即A项正确。

完形填空

完形填空。

     One day last year I went to a small but beautiful lake. The lake   1   before me, blue and peaceful. I sat down by
the side of the lake,   2   my shoes and socks, and put my feet into the water. It was cold, like ice. After a moment
I bent over (弯下身子) and got some of the   3   onto my hot face. I could see   4   in the water looking at me like a
stranger. How   5   I was after the long journey. I needed a good rest. Moreover, it was a very beautiful place   6   I
decided to stay here for a few days, out of noise and busy work. While I tried to make a plan for it, I found a small
   7   on the far side of the lake with some smoke coming from its roof. As I watched, a man came out of the house
and down to a little boat at the lakeside. He got into it and began to   8   towards my side. I could not see his face
at first. He went on moving   9   the lake, and when he got close to me, he raised a hand in a friendly way of greeting.
I saw his face   10   at that moment. It was Johnson-one of my old friends!

( )1. A. fell
( )2. A. burned off
( )3. A. water
( )4. A. yourself
( )5. A. tired
( )6. A. so
( )7. A. boat
( )8. A. run
( )9. A. through
( )10. A. quietly

B. lay
B. sold out
B. ice
B. oneself
B. thirsty
B. if
B. house
B. jump
B. to
B. clearly

C. rose
C. took off
C. air
C. itself
C. amazed
C. though
C. hill
C. move
C. above
C. differently

D. stopped
D. put on
D. sand
D. myself
D. pushy
D. because
D. theater
D. walk
D. across
D. strongly

单项选择题

Le fortⅡ型骨折是指

A．颧弓上骨折
B．锥形骨折
C．水平骨折
D．纵形骨折
E．矢状骨折