理想的静脉全麻药的特点有（）
A.漏至皮下不疼痛，对组织无损害，误入动脉不引起栓塞，坏死等严重并发症
B.易溶于水，溶液稳定，可长期保存；对静脉无刺激性，不产生血栓或血栓性静脉炎
C.应具有镇痛作用，对呼吸循环应无明显影响
D.起效快，苏醒期短，在一次臂-脑循环时间内起效者不易过量
E.体内无蓄积，可重复用药或静脉滴注
参考答案：A, B, C, D, E
Nowadays it is found that school students hardly have any sports. Is it because they have no 1 in sports? It may not be the fact. They often say they have 2 more important things to do. What are these important things? Examinations! They have to get themselves ready for the most important School Certificates of Education Examination（毕业会考），and also to deal with the tests and the exams in school. So many of them become bookworms. In the summer holidays after the Examination they could do 3 they like, but at the moment, they have to 4 all their time to the preparation. So studies have prevented them from going in sports. Because of the pressure（压力） 5 their parents and teachers, they have to work harder and spend most of their time on books. Many parents 6 their children to pass this examination in order to get a stepping stone for higher studies or better jobs. As for the 7 themselves, they want to get good results so that they can get their studies better. So it is necessary that they give up their school activities, especially sports. Indeed, every school cannot go 8 physical training, for a quick mind seldom goes along with a weak body. It is well said, "All work and no play 9 Jack a dull（迟钝的）boy." In one word, without a strong body, you can never do anything better, let alone a great success in 10 .
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