41～46题基于以下题干：
在一不发达的街道上，一开发商要在该街道的一边同时建四幢编号为1，3，5和7的房子，在街道的对边建四幢编号为2，4，6和8的房子。编号为2，4，6和8的房子将分别与编号为1，3，5和 7的房子相对。每幢房子的风格恰好是R，S和T中的某一种，且满足以下条件：
相邻的房子具有不同的风格：
(1)两个S风格的房子不能对面；
(2)每一个R风格的房子至少都有一个T风格的房子与其相邻；
(3)3号房子是R风格的；
(4)6号房子是S风格的。
下面除了哪一幢房子之外都可能是T风格的房子
A．1
B．2
C．4
D．7
参考答案：D
解析：41～46题
条件表达：
(1)相邻的房子具有不同的风格；
(2)|S×S|(表示两个S风格的房子不能对面)；
(3)R→(RT)每一个R风格的房子至少都有一个T风格的房子与其相邻；
(4)3=R(表示3号房子是R风格的)；
(5)6=S(6号房子是S风格的)。
条件分析：
因为5号与6号相对，所以当6号是S时，5号不是R就是T，又因为3号和5号相邻，且3号是R，所以5号房子只能是T风格的，如下表所示：
1
完形填空
| 完形填空。 | There was once a lonely girl who wanted love very much. One day while she was walking in the
forests, she found two dying birds. She took them home and put them in a small ___1___. She was
happy to have two "friends". She __ 2 __ them with love and the birds grew strong. One day the girl
happened to leave the door of the cage open. The larger and the___ 3___ of the two flew out of the
cage. The girl was afraid that it would fly away. She caught it quickly, she felt glad that she caught the
bird before it could fly away. Suddenly she couldn't _4 __ a sound from the bird. When she opened
her hand, the bird was already dead. Her_ 5___ killed the bird! Then she noticed ___ 6 __bird
jumping up and down___ 7 __the cage. She could feel its great need for freedom(自由) . It wanted
to fly into the clear, blue __8___. So she lifted it from the cage and let it fly away highly. The bird
circled once, twice, and three times. The girl ___ 9 __as the bird flew. She didn't care about losing
the bird any more. She wanted it to be happy. Suddenly the bird flew closer and landed softly on her
shoulder. It sang the ___10 __song she had ever heard.
The fastest way to lose love is to hold on it too tightly, and the best way to keep love is to give it
wings. |
( ) 1. A. box
( ) 2. A. looked for
( ) 3. A. stronger
( ) 4. A. listen
( ) 5. A. love
( ) 6. A. one
( ) 7. A. outside
( ) 8. A. sea
( ) 9. A. watched
( ) 10.A. worst | B. basket
B. looked at
B. lazier
B. make
B. joke
B, the other
B. inside
B. hill
B. saw
B. oldest | C. cage
C. looked after
C. weaker
C. describe
C. luck
C. another
C. beside
C. forest
C. guided
C. newest | D. bag
D. looked over
D. smaller
D. hear
D. wish
D. other
D. behind
D. sky
D. escaped
D. sweetest |
|
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