下面关于直角三角形的全等的判定，不正确的是( )． A．有一_爱下问搜题

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问题选择题

下面关于直角三角形的全等的判定，不正确的是( )．

A．有一锐角和一边对应相等的两个直角三角形全等

B．有两边对应相等的两个直角三角形全等

C．有两角对应相等，且有一条公共边的两个直角三角形全等

D．有两角和一边对应相等的两个直角三角形全等

答案

C .

题目分析：根据全等三角形的判定定理：AAS、SAS、ASA、SSS；直角三角形的判定定理HL对各选项逐个分析，然后即可得出答案：

A．由ASA或AAS可判定有一锐角和一边对应相等的两个直角三角形全等；

B．由SAS或HL可判定有两边对应相等的两个直角三角形全等；

C．因为公共边不一定是对应边，所以有两角对应相等，且有一条公共边的两个直角三角形不一定全等；

D．由AAS或AAS可判定有两角和一边对应相等的两个直角三角形全等.

故选C.

单项选择题 A1/A2型题

女性患者，32岁。出现剧烈头疼和呕吐24小时，经过检查诊断为蛛网膜下腔出血。下述哪点不是该病的常见临床表现（）

A.无明显的偏瘫和偏身感觉障碍

B.明显的偏瘫和偏身感觉障碍

C.有脑膜刺激征

D.血性脑脊液

E.可以出现意识障碍

完形填空

There are times when people are so tired that they fall asleep almost anywhere. We can see there is a lot of sleeping on the bus or train on the home from work in the evenings. A man will be the newspaper, but seconds later，with his head down, it as if he is trying to it . Or he will fall asleep on the shoulder of the stranger next to him. place where unplanned short sleep is in the lecture hall where a student will start snoring（打鼾）so that the professor has to ask another student to the sleeper awake. A more embarrassing（尴尬）situation happens when a student starts falling into sleep and the of the head pushes the arm down off the , and the movement causes the of the body to move together and finally he falls down to the floor. The student wakes up on the floor with no of the reason for getting there. The worst time to fall asleep is when . Police reports are full of that happen when people fall into sleep and go the road. If the drivers are , they are not seriously hurt. One woman’s car, , went into the river. She woke up in four feet of and thought it was raining. When people are really , nothing will stop them from falling asleep—no matter where they are.

D．for example