The world _______ many interesting sounds. Some are unpleasant to our ears while _______ are very pleasant to hear. In single day, you probably hear_______ sounds. All sounds are different. Some _______loud, some sounds are high, some are low, some sounds are useful.
_______sound, we can't talk or listen to each other. The hooting (鸣笛声) of a car warns people of danger.
Some sounds are harmful. When planes fly low _______ the land, the very loud sounds can damage the house. Very loud sound can even make people deaf.
We know sound travels about one kilometer in three _______ . In a thunder storm you see the lighting first and then hear the thunder. This is because light travels _______ than sound.
Next time you see lighting, count the number of seconds before you hear the thunder.
_______this number by three. This will tell you ____________ kilometers away the thunder storm is.
1.A. full of B. fill with C. is filled of D. is filled with
2.A. others B. the other C. another D. other
3.A. hundred of B. hundreds of C. hundreds D. hundred
4.A. may B. maybe C. may be D. can
5.A. Of B. With C. Without D. By
6.A. in B. on C. about D. over
7.A. hours B. days C. minutes D. seconds
8.A. more fast B. much faster C. more faster D. much fast
9.A. Divide B. Give C. Leave D. Put
10.A. how much B. how many C. how far D. how long
1.科学家们正在努力寻找预防这种疾病的办法。
Scientist are ____________ __________ find out the ways of preventing this disease.
2.他把女儿嫁给了一位工程师。
He_______his daughter _______an engineer.
3.替我保留这个座位,好吗?
Keep the seat for me, _________ ____________ ?
4.他已经做了两年多的班长了。
He has been a monitor for _____________ ____________ two years.
5.不要总是和朋友生气,否则体会失去他们的。
Don’t always _______ mad with friends, _____ you' 11 lose them.
1.I'd like to go to an exciting place for fun. (对画线部分提问)
______ would you ______ to go for fun?
2.The woman outside the door must be Mr. Black. (改为否定句)
The woman outside the door ________ ________ Mr. Black.
3.Do you often do your homework in pairs? (用ever替换often 改写句子)
______ you ever ______ your homework in pairs?
4.The glass is used for keeping water hot. (改为同义句)
People ________ the glass ______ keep water hot.
5.Can you tell me? Are there any problems with my plans? (合并为一句)
Can you tell me ___________ ___________ are any problems with my plans?
1.I first met Ellen two years ago. She _ _ in a car factory, at that time,
A. has worked B. works C. is working D. was working
2.Be sure _ _ the windows and the door when you leave.
A. to close B. closing C. closed D. close
3.I always _ _ a lot of money on these comics.
A. take B. cost C. spend D. pay
4.There wasn' t enough time. They _ _ to walk faster by the commander.
A. ask B. were asked C. asked D. are asked
5._ _ he usually _ _ to school by bus or on foot?
A. Does, go B. Do, go C. Will, go D. Has, gone
--- Thomas does well in dancing. How about Bob?
--- Bob is_____, I think. He once won the first prize in a dancing competition.
A. well B. better C. worst D. bad
-- Would you like me to help you?
-- ___________________ .
A. It doesn’t matter B. Yes, I can do it myself
C. Not at all D. Thanks, I can manage it myself