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问题 单项选择题 A3/A4型题

患者，女性，30岁。突发剧烈头痛1天，查体无明显阳性体征。患者头颅CT平扫显示鞍上池、外侧窝池及额、颞叶脑沟散在不规则高密度影。

该患者诊断为（）

A.脑梗死

B.脑出血

C.硬膜下血肿

D.蛛网膜下腔出血

E.硬膜外血肿

答案

参考答案：D

选择题

四边形ABCD内接于⊙O，BC是⊙O的直径，若∠ADC=120°，则∠ACB等于（　　）

A．30°

B．40°

C．60°

D．80°
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问答题

It is not my contention that chemical insecticides must never be used. I do contend that we have put poisonous and biologically potent chemicals indiscriminately into the hands of persons largely or wholly ignorant of their potentials for harm. We have subjected enormous numbers of people to contact with these poisons, without their consent and often without their knowledge. If the Bill of Rights contains no guarantee that a citizen shall be secure against lethal poisons distributed either by private individuals or by public officials, it is surely only because our forefathers, despite their considerable wisdom and foresight, could conceive of no such problem. I contend, furthermore, that we have allowed these chemicals to be used with little or no advance investigation of their effect on soil, water, wildlife and man himself. Future generations are unlikely to condone our lack of prudent concern for the integrity of the natural world that supports all life. There is still very limited awareness of the nature of the threat. This is an era of specialists, each of whom sees his own problem and is unaware of or intolerant of the larger frame into which it fits. It is also an era dominated by industry, in which the right to make a dollar at whatever cost is seldom challenged. When the public protests, confronted with some obvious evidence of damaging results of pesticide applications, it is fed little tranquilizing pills of half truth. We urgently need an end to these false assurances, to the sugar coating of unpalatable facts. It is the public that is being asked to assume the risks that the insect controllers calculate. The public must decide whether it wishes to continue on the present road, and it can do so only when in full possession of the facts. In the words of Jean Rostand, "The obligation to endure gives us the right to know."
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