与以下疾病相匹配的骨髓增生状态分别是急性重症再障 A．增生活跃 B．增生极度活跃 C

四年级有学生146人，在体育达标检测中有124人达标，22人没达标，求这个年级的达标率．

Einstein was born in 1879 in Germany. As a child, he was slow to learn to talk. As a pupil, he was backward. But when he was fourteen years old, he became clever. He taught himself maths from textbooks. He studied hard because he wanted to be a physicist.

In 1901, Einstein began teaching. In 1902 he continued his studies at the University of Zurich. Several years later, he formulated(系统地阐述)his famous Theory of Relativity(相对论).To most people the law of relativity is difficult to explain. But once Einstein explained it to a group of young students. He said,” When you sit with a good girl for two hours, you think it is only a minute. But when you sit on a hot stove for a minute, you think it's two hours. That is relativity."

After Hitler came into power in Germany, Einstein went to America. In 1940 Einstein became an American citizen. In 1955, Einstein's life ended at the age of seventy-six.

36. When Einstein was a pupil of twelve, he _______.

A. was not quick in learning to talk       B. was poor in his studies

C. studied very hard                   D. hardly lagged behind

37. The law of relativity is_______ .

A. very hard for most people to understand

B. too hard for Einstein himself to explain

C. too hard to explain to anybody except Einstein

D. easy to understand only for the young students

38. Which of the following do you think is true?

A. The Germans owed their scientific progress to Einstein.

B. The Americans owed all their economic development to Einstein.

C. Einstein owed a great deal to the modern world.

D. Einstein made a very great contribution to modern science.

39. The title for this passage should be " _______ ".

A. Theory of Relativity          B. An American Citizen

C. Albert Einstein              D. Einstein's Contribution

进行（）是设法降低所发生的风险损失的严重性，使损失最小化。

A．风险转移

B．损失预防

C．损失抑制

D．风险回避

关于局限性迷路炎的叙述，错误的是（）

A.有阵发性或继发性眩晕

B.听力减退

C.瘘管试验阴性

D.前庭功能减退

E.自发性眼震快相向病侧