问题 单项选择题

儿童使用感冒通退热可引起()

A.OQ 

B.PQ 

C.PV 

D.IQ 

E.SIP

答案

参考答案:B

解析:

此组题要求熟悉当前儿科用药中常见的一些问题。儿童病毒性感冒使用阿司匹林退热可引起雷耶综合征;使用去痛片(尤其是长期使用)可引起再障和紫癜;治疗佝偻病时,长期大量使用鱼肝油(含维生素A、D),可引起高钙血症。感冒通用于儿童造成血尿是因为其成分之一双氯芬酸抑制前列腺素合成与释放之故。柯兴征是长期用糖皮质激素引起的。

单项选择题
问答题

American and Japanese researchers are developing a smart car that will help drivers avoid accidents by predicting when they are about to make a dangerous move.

The smart car of the future will be able to tell if drivers are going to turn, change lanes, speed up, slow down or pass another car.

If the driver’s intended action could lead to an accident,the car will activate a warning system or override the move.

(46) " BY shifting the emphasis of car safety away from design of the vehicle itself and looking more toward the driver’s behavior, the developers believe that they can start to build cars that adapt to suit people’s needs , " New Scientist magazine said.

Alex Pentland of the Massachusetts Institute of Technology collaborated on the project with Andrew Liu who works for the Japanese carmaker Nissan.

(47)Tests of their smart car using a driving simulator have shown that it is 95 percent accurate in predicting a driver’s 12 seconds in advance.

(48)The system is based on driving behavior which the researchers say can be divided into chains of sub-actions which include preparatory moves.

It monitors the driver’s behavior patterns to predict the next move.

" To make its predictions, Nissan’s smart car uses a computer and sensors on the steering wheel, accelerator and brake to monitor a person’s driving patterns. (49)A brief training session, in which the driver is asked to perform certain maneuvers, allows the system to calculate the probability of particular actions occurring in two-second time segments, " the magazine said.

Liu has also done work on tracking eye movement to predict driving behavior. (50)He said the smart car could be adapted to monitor eye movement which could give even earlier predictions of when a driver is about to make a wrong move.

(47)Tests of their smart car using a driving simulator have shown that it is 95 percent accurate in predicting a driver’s 12 seconds in advance.