网址：http://m.1010jiajiao.com/timu3_id_3171175[举报]
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
equipment you need for your trip, so your food can't be too heavy or hard to prepare.Plus, there are
no refrigerators to keep food cold and fresh.
Food with all the water dried out is lightweight and doesn't spoil.So, many space foods are dried
on Earth and stored in special packets.Some, such as dried pears, taste good right out of the packet.
But to eat the turkey in this outerspace Thanksgiving dinner, an astronaut must add water and heat the
packets.
On Earth, gravity is the force that keeps your feet on the ground and your sandwich on your plate.
But there's no gravity in space.To keep food from floating away, astronauts on the Space Shuttle attach
the packets to a special tray.The tray can be fixed to a wall or to the astronaut's lap.To prepare their
food, astronauts use liquid forms of salt and pepper.The liquid sticks to the food better.Regular salt
and pepper would float away, maybe up an astronaut's nose.Achoo!
Liquids float right out of cups and glasses, though.So astronauts drink everything from a small bag
with a straw(饮料吸管) that can be closed.Astronauts say that most space foods taste pretty good.
Some, such as apples and pudding are the same as the foods you eat on Earth.
Astronauts eat tortillas(玉米粉圆饼) instead of bread because they make fewer crumbs(碎屑).
Floating crumbs could get stuck in equipment or an astronaut's eye.
Your body uses food in space the same way it does on Earth.Your body must get rid of waste in
space too.
During take off and landing, astronauts can't leave their seats to go to the bathroom.They wear
diapers(尿布) under their spacesuits instead.
The Space Shuttle has a bathroom the size of a small closet.The toilet has bars that keep astronauts
from floating away.
A strong flow of air is used instead of water to flush waste down the toilet.Back on Earth it's flushed
away－or sometimes studied by scientists.
1. Why do astronauts use liquid forms of salt and pepper to prepare food?
A. Liquid doesn't spoil.
B. Liquid is convenient to use in space.
C. Liquid is lightweight.
D. Astronauts are in great need of water.
2. What do astronauts think of space foods?
A. Most of them taste pleasant.
B. They are mostly fruits.
C. Most of them are cold.
D. They contain little meat.
3. Why don't astronauts eat bread?
A. Bread tastes bad.
B. Tiny pieces may float.
C. Bread weights heavy.
D. Bread is rather hard to prepare.
4. We can infer from the passage that astronauts ______.
A. drink from cups and glasses
B. always wear diapers in space
C. can move freely during landing
D. must pay attention to the crumbs in space
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||
完形填空 （共20小题；每小题1.5分，满分30分）
That cold January night, I was growing sick of my life in San Francisco. There I was, walking home at one in the morning after a tiring practice at the theatre. With the first performance only a week 36 , I was still learning my lines. I was having 37 dealing with my part-time job at the bank and my acting at night at the same time. As I walked, I thought seriously about 38 up both acting and San Francisco. City life had become too much for me.
As I walked down 39 streets under tall buildings, I felt very small and cold. I began running, both to keep 40 and to keep away from any possible 41 . Very few people were still out except a few sad-looking homeless people under blankets.
About a block from my apartment, I heard a sound behind me. I 42 quickly, half 43 to see someone with a knife or a gun. The street was empty. All I saw was a shining streetlight. Still, the noise had made me 44 , so I started to run faster. Not until I reached my apartment building and unlocked the door did I realize 45 the noise had been. It had been my 46 falling to the sidewalk.
Suddenly I wasn't cold or tired anymore. I ran out of the door and back to 47 I'd heard the noise. Although I 48 the sidewalk anxiously for fifteen minutes, my wallet was 49 to be found.
I was about to give up the search when I heard the garbage truck pull up to the sidewalk next to me. When a voice called from the 50 , "Alisa Camacho?" I thought I was 51 . How could this man know my name? The door opened, and out jumped a small red-haired man with an amused look in his eye. "Is this what you're looking for?" he asked, 52 up a small square shape.
It was nearly 3 a.m. by the time I got into bed. I wouldn't get much 53 that night, but I had gotten my wallet back. I also had gotten back some 54 of city life. I realized that the city couldn't be a bad place as long as people were 55 to help each other.
36．A. ago B. before C. away D. off
37．A. fun B. trouble C. interest D. boredom
38．A. giving B. keeping C. going D. clearing
39．A. narrow B. dirty C. empty D. dark
40．A. warm B. hot C. cold D. cool
41．A. pickpockets B. murderers C. policemen D. robbers
42．A. ran B. turned C. walked D. looked
43．A. meaning B. wanting C. expecting D. hoping
44．A. sad B. nervous C. cold D. happy
45．A. what B. how C. why D. which
46．A. wallet B. watch C. hat D. key
47．A. when B. where C. at which D. which
48．A. looked for B. found C. searched D. headed
49．A. somewhere B. nowhere C. anywhere D. everywhere
50．A. outside B. inside C. behind D. above
51．A. drinking B. dreaming C. sleeping D. walking
52．A. bringing B. taking C. holding D. keeping
53．A. money B. sleep C. happiness D. practice
54．A. enjoyment B. sadness C. puzzle D. disappointment
55．A. pleased B. anxious C. willing D. content
查看习题详情和答案>>