吗啡中毒可表现A．黄疸 B．心律失常 C．瞳孔如针尖大 D．瞳孔_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

吗啡中毒可表现

A．黄疸

B．心律失常

C．瞳孔如针尖大

D．瞳孔扩大

E．发绀

答案

参考答案：C

完形填空

A man who knows how to write a personal letter has a very powerful tool.A letter can be enjoyed, read and ____.It can set up a warm conversation between two people far apart(远离的)；it can keep a ____with very little effort.
I will give___.A few years ago my older brother and I were not getting____.We had been close as____but had grown apart.Our meetings were not____； our conversation was filled with arguments and quarrels; and every effort to clear the air seemed to only ___our misunderstanding.Then he____a small island in the Caribbean and we___touch.One day he wrote me a letter.He described his island and its people, told me what he was doing, said how he felt, and encouraged me to____.Rereading the letter, I was____by its humor(幽默)and clever expressions.These were all qualities for which I had____respected my older brother but____he no longer had them.I had never known he could write so____.And with that one letter we became friends____.
It might never have occurred to____to write me if he had not been in a place where there were no___.For him, writing was a necessity.It also turned out to be the best way for us to get back in touch.Because we live in an age of____communication(通讯), people often____ that they don't always have to phone or email.They have a____.And that is to write.

C．an experience

A．mail services

B．transport services

填空题

降水对飞行的影响主要有降水使能见度降低、过冷水滴会造成飞机（）、降水产生的碎云会妨碍飞机起飞着陆、降水影响跑道的使用。