外阴鳞状上皮细胞增生癌变率为（） A.1％ B.3％ C.5％ D.0.5％ E.1

哥哥晚上9时睡觉，第二天早上7时起床，他一共睡了9小时．______

理由：______．

B

Mary went out at night. She never forgot the night when she met a robber many years ago.

That evening, she was invited to a birthday party which lasted until two o’clock in the morning. Without company Mary walked along the quiet street.

Suddenly from the shadow of a dark building a tall man with a sharp knife in his right hand ran out at her. “Good evening, lady,” the man said in a low voice, “I don’t think you wish to die here.”

“What do you want?” Mary asked.

“Your earrings （耳环）.Take them off!” Slowly Mary’s eyes looked down. She tried to cover her necklace with the collar（领子）of her overcoat while she used the other hand to take off both of her earrings, and then she quickly threw them on the ground.

“Take them and let me go.” she said. The robber looked at her only feeling uncertain. He saw the girl didn’t care for the earrings at all, only trying to protect the necklace. He realized the necklace would cost more. So he said, “Give me your necklace.”

“Oh, sir. It’s not worth much. Please let me keep it.”

“Stop rubbish. Quick!”

With shaky hands, Mary took off her necklace. As soon as the robber disappeared, she picked up her earrings and ran as fast as she could to one of her friends.

The earrings cost 480 pounds and the necklace the robber had taken away cost only six pounds ten shillings.

44. Mary never forgot that night because ___________.

A. she was robbed of her necklace                      B. she was robbed, but she fooled the robber

C. she had a good time at the party              D. she lost her earrings

45. The party ___________.

A. didn’t end at two      B. ended before two     C. lasted two hours      D. was over at two

46. She tried to protect the necklace because ___________.

A. she didn’t want to lose it                        B. it was more important           

C. she liked it better than earrings                    D. she would rather have the necklace lost

47. The story tells us that she was a ___________girl.

A. clever and brave     B. clever and beautiful    C. brave and careful      D. clever and careful

监察机关依照《中华人民共和国行政监察法》的规定，对安全生产许可证颁发管理机关及其工作人员履行《安全生产许可证条例》规定的职责实施监察。

当代世界各国的教育管理体制有中央集权型、中间型和（）等三种。

计算题：如图4-4所示，已知L₁=238m，L₂=297m，h₁=12m，h₂=8.5m，垂直比载g₁=25．074×10^-3N/（m•mm²），应力α_O=48.714MPa，试计算2^＃杆的水平档距和垂直档距。