题目内容
Don't fall ________.
- A.sleep
- B.asleep
- C.sleepy
- D.slept
目标测试系列答案BEING an astronaut sounds cool, doesn't it? In space, they get to do some pretty amazing things, like floating in zero gravity(重力).
However, there are also plenty of things that astronauts can't do because of their weightless environment, and that's very sad. What's worse, they can't even let their sadness show, because it's impossible to cry in zero gravity.
Of course, astronauts can still produce tears. But crying is much more difficult in space, according to The Atlantic(大西洋月刊) in January. Without gravity, tears don't flow(流动) down out of the eyes like they do here on Earth. This means that when you cry in space, your tears have nowhere to go-they just stick(粘) to your eyes.
In May 2011, astronaut Andrew Feustel experienced this during one of his spacewalks. "Tears," he said, "don't fall off of your eyes...They just kind of stay there."
Besides making your vision(视线)unclear, this can also cause physical pain. Back on Earth, tears are supposed to bring comfort to the eyes. But that's not the case in space. The space environment dries out astronauts' eyes, and when tears suddenly wet the eyes, it can cause pain rather than comfort. "My right eye is stinging(刺痛) like crazy," Feustel told his teammate during the walk.
Since gravity doesn't work in space, astronauts need some extra help to get rid of（除去） the tears. Feustel chose to rub his eyes against his helmet to wipe(擦) the tears away. Another choice is to just wait-"When the tears get big enough they simply break free of the eyes and float around," astronaut Ron Parise told The Atlantic.
There are lots of small things-things like crying-that we are so used to on Earth. We usually take them for granted until they become a problem in a totally different environment, like space. There, astronauts can't talk to each other directly. They also can't eat or drink in normal ways. They can't even burp (打嗝), because there is no gravity to hold the food down in their stomach. If they do burp, they just end up throwing up（呕吐）everything in their stomach, according to the UK National Space Center.
Therefore, perhaps it's only space explorers who can honestly say: "Gravity, you're the best."
【小题1】From Paragraphs 2 and 3 , we can know that_______.
| A．astronauts are unable to feel sad in space |
| B．astronauts produce fewer tears in space |
| C．tears produced in space flow down more slowly |
| D．tears produced in space don't flow downward |
| A．They cause physical pain. |
| B．They bring comfort to them. |
| C．They make their vision clearer. |
| D．They float around and cause trouble. |
| A．find them important |
| B．consider them useless |
| C．need them during an emergency |
| D．fail to notice their presence(存在) |
| A．suggestions of how astronauts can stay comfortable in space |
| B．other basic things that are difficult to do in space |
| C．why burping is impossible in space |
| D．things human can't do without gravity |
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. |
rson,
you can 
also
find a way out. First of all, you can make friends with the students who have
the same interest and hobby as you. As both of you have lunch in common ,
you may have much to talk about. If you keep doing like that, little by little,
you will gladly find you can express yourself freely as others.