根据短文内容，用方框中所给词的适当形式填空，并用其正确形式填空，使短文完整，正确。（每个词只能用一次；共10分，每小题一分）
Light travels at a speed(速度) which is about a million times faster than that of sound .
One second, light travels about 300000 kilometers, but sound travels only 340 . You can get some idea of this difference by
________ the start of a running match. If you stand far away from the starter(发令员), you can see smoke
________ from his gun before the sound reaches your ears.
The speed of light produces some strange facts. The
star is so far away that light which you can see from it tonight started to travel to you four years
________ at a speed of nearly two million kilometers every minute. The light from some of tonight's started on
________ journey towards you even before you were born.
So, if we want to be honest(诚实), we can not say , " The stars are shining ________tonight." We have to say, " The stars look nice. They were
_______ four years ago but their light has just reached our earth. "
仔细阅读下面五个句子，然后用下面方框中所给的单词或短语填空，使每个句子在结构、句义和逻辑上正确。（提示：选项中有一个是多余的。）
| keep out /expensive / lead /compare /take out /cheap |
Rose took us out to dinner at an _____restaurant, but the food was not good at all .
I need a new coat .This one doesn’t _____the cold
Working hard at Science can _____to a good job.
Wait before you buy that computer , Let’s ____prices at another store .
Her shoes were really ____ They only cost seven dollars。
根据短文内容，用方框中所给单词的适当形式填空，每词限用一次。
Scientists would like to put a huge mirror in space above the earth. It might be sixty miles wide. It would be to catch the rays of the sun. it would direct the sun’s rays on the earth as a child might do to make sunlight
on the wall with a hand mirror.
Why do they want to do this? The sun’s rays could be in many ways. They could light up
by night. The warm rays could stop frosts(霜冻) which might come at night and hurt fruit and crops. They could melt（融化)
icebergs in the ocean. Perhaps they could change cloud movements and bring rain where it is needed.
根据短文内容，用方框中所给单词的适当形式填空，每词限用一次。
Scientists would like to put a huge mirror in space above the earth. It might be sixty miles wide. It would be to catch the rays of the sun. it would direct the sun’s rays on the earth as a child might do to make sunlight
on the wall with a hand mirror.
Why do they want to do this? The sun’s rays could be in many ways. They could light up
by night. The warm rays could stop frosts(霜冻) which might come at night and hurt fruit and crops. They could melt（融化)
icebergs in the ocean. Perhaps they could change cloud movements and bring rain where it is needed.
根据短文内容，用方框中所给单词的适当形式填空。每词限用一次。
Nowadays, we are paying more attention to our students’ safety in our country. But what do other countries do to keep students safe?
In Japan, earthquake drills (演练) are held once a month. They students safety tips during an earthquake. The training
students escape from earthquake-stricken areas. In Australia, most students take first-aid courses at school. They learn basic first-aid
in the class, such as, how to use the emergency (紧急) number for an ambulance (救护车) and what to do
someone is hurt. Most US school buildings have fire escapes. They are told to get to the fire escape through a fire exit door or a window. It is not a good idea to jump out of the window from
than two floors because they may get injured.
选词填空。用方框中所给词的适当形式填空，使文章通顺、连贯、合理。（每空一词，每词限用一次，其中有两个词是多余的。共8分）
| really |
exercise |
thin |
without |
nothing |
interesting |
fat |
sit |
with |
use |
Do you know what couch-potato means? Well, in America, the word is now often . You see, in America, many people often spend their free time
on a couch (沙发) watching TV. As there are many channels to choose, the TV programs can be quite
and very addictive (使人上瘾的). One may sit and watch TV for hours and hours
stopping! Well, these people who do
all day except watching TV are called couch-potatoes.
In America, while watching TV, most people are always sitting with eyes still looking right into the TV set. Also because these people are addictive to watch TV, they don’t take and usually get very fat. So in many ways, these people look like
potatoes! Well, because they look
, and watch TV on a couch, they are all called couch-potatoes. Now you know what a couch-potato means. The next time if you see someone watching TV too long, just say, “What a couch-potato!”
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