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小环M套在固定圆环O和杆AB上,当杆转动时使小环M沿固定圆环和杆上滑动。已知固定圆环半径R,角φ=ωt,式中ω为常量,试求M点的运动方程、速度和加速度。

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O. Henry, a famous American writer of short stories, was born in North Carolina in 1862. O. Henry was a pen name. His real name was William Sydney Porter. When he was a young boy, he did not go to school for long because of being born in a poor family, but he tried to teach himself everything he needed to know.

When he was about 20 years old, O. Henry went to Texas. There he tried different jobs. He first worked on a newspaper, and then had a job in a bank. But he got himself into some trouble. Some money went missing from the bank. O. Henry was believed to have stolen it, so he was sent to prison(监狱). During the three years in prison, he learned to write short stories. After he got out of prison, he went to New York and went on writing.

He wrote mostly about New York and the life of the poor there. People liked his stories, because almost all of them finished with a sudden change. This made the readers surprised.

小题1:___________ was the real name of the famous American writer.

A.O. Henry

B.William Sydney Porter

C.Carolina

D.Texas小题2:O. Henry was sent to prison because _________________.

A.People thought he had stolen money from the newspaper.

B.People thought he had stolen money from the bank.

C.he wanted to write stories about prisoners.

D.he broke the law (法律) by not using his own name小题3:Which of the following is true?

A.O. Henry was from a rich family

B.O. Henry was in school for a long time.

C.O. Henry learned everything he needed by himself.

D.O. Henry liked writing stories when he was a little boy.小题4:O. Henry got most materials for his stories from ______________.

A.his happy life as a boy

B.New York and the poor of the city

C.the newspaper

D.his life in prison小题5:People enjoyed reading O. Henry’s stories because _________________

A.they had surprising endings

B.they were easy to understand

C.they showed love for the poor

D.they were about New York

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