文档介绍：In the sky, you can’t cry
Many simple things, are very normal on earth, can’ t be done in space, because of the (weight) environment. For example, crying is very difficult 3. ____ astronauts. Tears don’t fall down out of the eyes 4. ____ gravity. Evidence shows that when you cry in space, tears have nowhere 5. _____( go); they just stay there. Back on earth tears are supposed to fort to the eyes. 6. _____ in space that is not the case.
The space environment dries out the eyes, and when tears suddenly wet the eyes, it can cause more pain 7. fort. What can astronauts do to get rid of tears? They can either choose to rub the eyes 8. ___ wait until tears get big enough to break free of the eyes. There are other small things which people are used to on earth that are a problem in space too. The astronauts can’t talk to each other 9. _____ (direct). They can’t eat or drink in normal ways. They can’t even burp (打嗝), 10. _____ there is no gravity to hold the food down in their stomach.
In the sky, you can’t cry
Many simple things, are very normal on earth, can’ t be done in space, because of the (weight) environment. For example, crying is very difficult 3. for astronauts. Tears don’t fall down out of the eyes gravity. Evidence shows that when you cry in space, tears have nowhere 5. to go( go); they just stay there. Back on earth tears are supposed to fort to the eyes. 6. But in space that is not the case.
The space environment dries out the eyes, and when tears suddenly wet the eyes, it can cause more pain . What can astronauts do to get rid of tears? They can either choose to rub the eyes 8. or wait until tears get big enough to break free of the eyes. There are other small things which people are used to on earth that are a problem in space too. The astronauts can’t talk to each other 9. directly (direct). They can’t eat or drink in normal ways. They can’t even burp (打嗝), 10. because there is no gravity to hold