σb/σs是()的表达式。A.强屈比 B.屈服点比 C.强度比 D.抗拉强度

题型:单项选择题

问题:

σb/σs是()的表达式。

A.强屈比

B.屈服点比

C.强度比

D.抗拉强度

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题型:单项选择题

A friend of mine named Paul received a car from his brother as a Christmas present. On Christmas Eve when Paul came out of his office, a boy was walking around the shining car. "Is this your car, Paul?" he asked.

Paul answered, "Yes, my brother gave it to me for Christmas." The boy was surprised. "You mean your brother gave it to you and it cost you nothing? Boy, I wish..."He hesitated.

Of course Paul knew what he was going to wish for. He was going to wish he had a brother like that. But what the boy said surprised Paul greatly.

"I wish," the boy went on, "that I could be a brother like that." Paul looked at the boy in surprise. and then he said again, "Would you like to take a ride in my car?"

"Oh yes, I'd love to."

After a short ride, the boy turned and with his eyes shining, said, "Paul, would you mind driving in front of my house?"

Paul smiled a little. He thought he knew what the boy wanted. He wanted to show his neighbors that he could ride home in a big car. But Paul was wrong again. "Will you stop where those two steps are?" the boy asked.

He ran up to the steps. Then in a short while Paul heard him coming back, but he was not coming fast. He was carrying his little crippled (残疾) brother. He sat him down on the step and pointed to the car.

"There he is, Buddy, just like I told you upstairs. His brother gave it to him for Christmas and it didn't cost him a cent. And someday I'm going to give you one just like that…then you can see for yourself all the nice things in the Christmas window that I've been trying to tell you about."

Paul got out and lifted the boy to the front seat of his car. The shining-eyed older brother climbed in beside him and the three of them began an unforgettable holiday ride.

小题1:The boy was very surprised when _______.

A.Paul received an expensive car

B.Paul told him about the car

C.he saw the shining car

D.he was walking around the car小题2:From the story we can see the boy _______.

A.wished to give his brother a car

B.wanted Paul's brother to give him a car

C.wished he could have a brother like Paul's

D.wished Paul could be a brother like that小题3:We can infer (推断) from the story that _______.

A.Paul couldn't understand the boy

B.the boy had a deep love for his brother

C.the boy wished to have a rich brother

D.the boy's wish came true in the end小题4:The best title(标题) of the story is    .

A.A Christmas Present

B.A Boy

C.A Brother Like That

D.An Unforgettable Holiday Ride

题型:单项选择题
方程2x=1的解与(  )的解相等.
A.x÷2=1B.3x=6C.4x=2
题型:单项选择题

患儿,男,7岁,家长诉近1年夜间睡眠打鼾,注意力不集中,看电视音量大。间接喉镜下可见鼻咽顶后壁红色块状隆起,有纵行的沟,阻塞部分后鼻孔。

对于残存或复发的腺样体,下列措施不恰当的是()。

A.术前术后使用减充血剂喷鼻

B.腭扁桃体切除

C.间接喉镜下等离子低温射频消融系统切除腺样体

D.间接喉镜下切割系统切除腺样体

E.鼻内镜下等离子低温射频消融系统切除腺样体

F.鼻内镜下切割系统切除腺样体

G.腺样体刮除术

题型:单项选择题

以干燥管状花入药的是()

A.红花

B.款冬花

C.金银花

D.番红花

题型:单项选择题

作为凝血因子的是

A.血清
B.清蛋白
C.纤维蛋白原
D.补体
E.抗体

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