题目列表(包括答案和解析)
There have been many important developments in medicine.The following are two developments that have been very important in saving lives.
Imagine having an operation and being wide awake.This won’t happen,thanks to something called anesthetic.Anesthetics are given to people during operations so that they fall asleep.Anesthetics cause the muscles to relax and the body to become numb(lose all feeling)so that no pain is felt.This helps the doctors to operate more easily.Anesthetics may be taken in different ways:
●Breathing in a gas
●An injection straight into the bloodstream
●Swallowing a tablet
A local anesthetic numbs only the area where the doctor needs to work.A general anesthetic is when a Patient is put into sleep while the doctor operates Anesthetics were first given in 1844.
Heart disease is one of the biggest killers in the world today Luckily,something can be done about it.Someone who has an unhealthy heart can have a heart transport operation.A heart transplant is when the damaged heart of a patient is taken out and a healthy heart is put in.It is said,though,that the healthy heart has to come from someone who has died Doctor Barard from South Africa was the first person to do a heart transplant operation in 1967.Many successful transplants have been done since then.
It is wonderful what doctors are able to do for us.
( )1.With the help of______,patients aren’t able to feel painful during the operations.
A.injections B.pills C.gas D.anesthetics
( )2.Anesthetics have been used for about______.
A.200 B.184 C.165 D.41
( )3.Which does a doctor use to do a heart transplant operation to save lives,a damaged heart or a healthy heart?
A.A damaged heart B.A healthy heart C.Both D.Neither
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SPACE is a lonely place. Hundreds of thousands of kilometers from home, astronauts have a hard life. It stands to reason that, once in a while, they need to have a good cry. But this is a lot harder than it sounds.
We still know very little about space, and about living in zero gravity. In fact, we are discovering new things every time astronauts take to the skies (and beyond). As The Atlantic reported in January, crying is not all that simple in space. This is because when a person normally cries, gravity makes their tears move downwards. But in a spacecraft, this is not the case. Here, there is no gravity, which is why we so often see pictures of astronauts floating around. This means that, strangely, when you cry your tears have nowhere to go. As a result, they just stick to your eyes.
In May 2011, astronaut Andrew Feustel experienced this. “Tears,” as he said, “don’t fall off your eye… they just kind of stay there. ” This can be quite painful. In space, your eyes get very dry, and the added moisture is irritating (气人的). Sometimes, things get even weirder(更怪异的). The astronaut Ron Parise told The Atlantic that when tears get big enough, they “break free of the eye and float around”.
No one can be quite sure why we cry. Why should water in our eyes have anything to do with feeling sad? If you stop to think about it, crying is a very strange thing indeed. And now, thanks to the wonders of space, it just got even stranger.
【小题1】The first paragraph mainly wants to tell us that .
| A.living in space is lonely |
| B.it’s easy to feel sad in space |
| C.it’s hard to cry in space |
| D.nobody wants to live in space |
| A.move downwards | B.move upwards |
| C.go out of the window | D.stick to their eyes |
| A.sad | B.comfortable | C.happy | D.uncomfortable |
| A.In space our eyes are very wet. |
| B.Tears will float around if they are big enough in space. |
| C.People know everything about living in zero gravity. |
| D.Gravity makes people’s tears move upwards in space. |
| A.living in space is lonely |
| B.it’s easy to feel sad in space |
| C.it’s hard to cry in space |
| D.nobody wants to live in space |
| A.move downwards | B.move upwards |
| C.go out of the window | D.stick to their eyes |
| A.sad | B.comfortable | C.happy | D.uncomfortable |
| A.In space our eyes are very wet. |
| B.Tears will float around if they are big enough in space. |
| C.People know everything about living in zero gravity. |
| D.Gravity makes people’s tears move upwards in space. |
选出最佳选项完成下面的对话。
A:Hello! 28361579.
B:Is that Mr. Jones?
A:Sorry, 1 . He left home a few minutes ago.
B: 2 . Will he come back soon?
A:No. Will you ring him up again this evening.
B:Sorry, but I won't be free tonight.
A: 3 ?
B:It's very kind of you. There'll be a talk on English history at 10:30 tomorrow afternoon. 4 .
A:I certainly will. 5 as soon as he comes back.
B:Thanks a lot. Good-bye!
A.That's too bad
B.Can I take a message for you
C.I'll tell him
D.He is out
E.Tell him not to be late
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