探诊适用于（） A.牙隐裂 B.牙根折 C.氟牙症 D.龋病 E.四环素牙

阅读理解。

     Mr Grey was the manager (经理) of a small office in London. He lived in the country, and came to work

by train. He liked walking from the station to his office if it was not raining, because it gave him some exercises. One morning he was walking along the street when a stranger (陌生人) stopped him and said to him," You

may not remember me, sir, but seven years ago I came to London without any money in my pocket (口袋). I

stopped you in this street and asked you to lend (借) me some money, and you lent me five pounds (英镑),

because you said that you were happy to take a chance (机会) so as to give a man a start on the road to

success." Mr Grey thought for a few moments and then said," Yes, I remember you. Go on (继续) with your

story."" Well," answered the stranger," are you still willing to take a chance?"

1. Mr. Grey walked to his office only when the weather was ________.

A. well

B. fine

C. bad

D. raining

2. Mr. Grey walked because ________.

A. he was poor

B. it was not raining

C. it helped him in good health (健康)

D. he had a lot of homework

3. Mr. Grey ________ the stranger some years ago.

A. had stopped

B. had met

C. had said to

D. had helped

4. The stranger_________ since then.

A. had been successful

B. had still been poor

C. had been rich

D. had had much money

5. Now the stranger wanted to _________.

A. ask for some money again

B. give Mr. Grey his money back

C. help Mr. Grey

D. lend (借给) Mr. Grey some money

期权从买方的权利来划分，分为看涨期权和看跌期权。（）

下列实验现象描述与事实不符合的是　  [ ]

A．碳酸钠与稀盐酸反应产生气体　

B．木炭在氧气中燃烧，发出白光，有黑色固体生成　

C．红磷在空气中燃烧，产生大量白烟　

D．将铁钉放入硫酸铜溶液中，铁钉上有红色固体析出

粒细胞的保存最佳温度

A．-30。C

B．4。C

C．22。C

D．37。C

作为家长，要对孩子进行归因教育，才能帮助孩子正确地自我归因，去除消极的归因，引导其积极归因，从而激发孩子的学习动力，提高学习成绩和学习心理素质。