问题 单项选择题 A1/A2型题

下列检查结果符合原发性血小板减少性紫癜诊断的是()

A.出血时间正常,凝血时间及凝血酶原时间延长

B.血小板计数正常,血块退缩良好,凝血时间正常

C.血小板计数减少,血块退缩不良,出血时间延长

D.纤维蛋白原减少,凝血酶时间及凝血酶原时间延长

E.血小板黏附性下降,凝血酶时间及凝血酶原时间延长

答案

参考答案:C

解析:原发性血小板减少性紫癜是体内存在血小板抗体,破坏血小板,造成血小板数量减少,功能缺陷,因此血块退缩不良,出血时间延长,凝血因子试验正常。

单项选择题
单项选择题

When Dave was eighteen, he bought a secondhand car for 200 so that he could travel to and from work more (1) than by bus. It worked quite well for a few years, but then it got so old, and it was costing him (2) much in repairs that he decided that he had better (3) it.

He asked among his friends to see if anyone was particularly (4) to buy a cheap car, but they all knew that it was falling to pieces, so (5) of them had any desire to buy it. Dave’s friend Sam saw that he was (6) when they met one evening, and said, "What’s (7) , Dave"

Dave told him, and Sam answered, "Well, what about advertising it in the paper You may (8) more for it that way than the cost of the advertisement!" Thinking that Sam’s (9) was sensible, he put an advertisement in an evening paper, which read "For sale: small car, (10) very little petrol, only two owners. Bargain at 50. " For two days after the advertisement first appeared, there was no (11) . But then on Saturday evening he had an enquiry. A man rang up and said he would like to (12) him about the car. "All right, " Dave said, feeling happy. He asked the man whether ten o’clock the next morning would be (13) or not. "Fine, " the man said, "and I’ll (14) my wife. We intend to go for a ride in it to (15) it. "

The next morning, at a quarter to ten, Dave parked the car in the square outside his front door, (16) to wait there for the people who had (17) his advertisement. Even Dave had to (18) that the car really looked like a wreck. Then, soon after he had got the car as clean (19) it could be, a police car stopped just behind him and a policeman got out. He looked at Dave’s car and then said, "Have you reported this (20) to us yet, sir\

9().

A.message 

B.advice 

C.request 

D.description