画线段AB,在线段AB外取一点O,作出线段AB绕点O旋转180°后所得的线段A′B′.请指出AB和A′B′的关系,并说明你的理由. 答案:AB∥A′B′,且AB=A′B′,△AOB≌△A′OB′; One day a few years ago
a very funny thing happened to a neighbour of mine. He is a teacher at one of London’s big medical schools, He had finished his teaching for the summer term and was at
the airport on his way to Russia to give a lecture.
He had put a few clothes
and his lecture notes in his shoulder bag, but he had put Rupert, the skeleton
(人体骨骼) to be used
in his lecture, in a large brown suitcase (箱子). At the airport desk, he suddenly thought that
he had forgotten to buy a newspaper. He left his suitcase near the desk and
went over to the shop.
When he got back he
discovered that someone had taken his suitcase by mistake. He often wonders
what they said when they got home and found Rupert.
56. Who wrote the story?
A. Rupert’s teacher.
B. The neighbour’s teacher.
C. A medical school teacher. D.
The teacher’s neighbour.
57. Why did the teacher put a skeleton in
his suitcase?
A. He needed it for the summer
term in London.
B. He needed it for the
lecture he was going to give.
C. He wanted to take it to Russia for medical research.
D. He wanted to take it home
as he had finished his teaching.
58. What happened at the airport?
A. The skeleton went missing .
B. The skeleton was stolen .
C. The teacher forgot his
suitcase. D. The teacher took the wrong suitcase .
59. Which of the following best tells the
teacher’s feeling about the incident?
A. He is very angry .
B. He thinks
it rather funny .
C. He feels helpless without
Rupert. D. He feels good
without Rupert .
60. Which of the following might have
happened afterwards?
A. The teacher got back the
suitcase but not Rupert.
B. The teacher got back
neither the suitcase nor Rupert.
C. The teacher got back Rupert
but not the suitcase.
D. The teacher got back both
the suitcase and Rupert.