骨质硬化

纳税人在停业期间发生纳税义务的，应当按照税收法律、行政法规的规定申报缴纳税款。（）

保险制度上的危险是一种损失发生的不确定性，其主要表现形式为（）。

A.发生与否的不确定性

B.发生顺序的不确定性

C.发生时间的不确定性

D.发生后果的不确定性

E.发生原因的不确定性

There is one word that is on the lips of Americans, day and night: “Sorry.”

One time as I was walking on the street, a young man ran by hurriedly, brushing against my handbag. Even as he continued on his way, he turned back and said “sorry” to me. Even in a rush, he didn’t forget to apologize. One day, after I bought a mango, the salesman was giving me the change, but I wasn’t ready for it and a coin dropped to the ground. “I’m sorry,” he said while bending down to pick it up. I was puzzled—why would he apologize when it is my fault?

Another time, I stepped on a man’s foot in an escalator, at the same time, we both said “sorry”. I thought it interesting, was it really necessary for him to apologize? Later on, an American friend explained to me that according to the American mentality, the escalators a public place, and everyone should be able to stand in it. After someone occupies a position in the elevator, making it difficult for someone else to find a place to stand, isn’t it necessary to express an apology?

If you go to the movies and the tickets happen to be sold out, the ticket seller will say: “Sorry, the tickets are sold out.” Whenever one of your hopes goes unfulfilled, an American will say “sorry” as a sign of sympathy.

During my stay in America, I often came across situations in which I was supposed to say “sorry”. Gradually, I realized that when friction（摩擦）appears in daily life, Americans don’t care much about who is wrong; If someone is troubled, a “sorry” is always necessary. When this happens, even if the other person is hurt, the “sorry” cools tempers and human kindness is shown. Perhaps this is why I never saw anyone quarreling on the buses, subways or streets of America.

小题1:How many examples are given to show that Americans like to say “sorry”?

A．One

B．Two

C．Three

D．Four小题2:When the author was walking on the street, a young man ran by hurriedly ______.

A．and took away his bag

B．and touched his bag

C．to help him with his bag

D．to brush his bag小题3:Which of the following plays a different role in the passage?

A．Paragraph 2

B．Paragraph 3

C．Paragraph 4

D．Paragraph 5小题4:At last, the author’s attitude towards the Americans’ “sorry” seems to be ______.

A．angry

B．interested

C．approving(赞成)

D．disappointed小题5:The best title for the passage can be “_______”.

A．My life in America

B．Americans’ “sorry”

C．My experience in an escalator

D．The meaning of “sorry”

红、肿、热、痛和机能障碍是指　　

A．炎症的本质

B．炎症的基本经过

C．炎症局部的主要表现

D．炎症时机体的全身反应

E．炎症局部的基本病理变化

前苏联科学家特罗緬柯认为，微型黑洞发射的中微子的数量是太阳中微子的数量的（）倍。

A.5；

B.10；

C.100；

D.1000