Light travels________ than sound.
A.much fast B.far fast C.much faster D.more taster
科目:初中英语 来源: 题型:
查看答案和解析>>
科目:初中英语 来源:2011-2012学年江苏宜兴外国语学校初二下学期期中考试英语试卷(带解析) 题型:单词拼写
用动词的适当形式填空
【小题1】____________(study) Zhalong helps us learn about protecting wildlife.
【小题2】Some of the students___________(remove)the snow when we arrived there.
【小题3】One of my classmates __________________ ( be) to the Great Wall twice.
【小题4】Father’s Day is coming, but I__________ (buy) a present for my father yet.
【小题5】Tom ____________ (live) in Nanjing for ten months in 2005.
【小题6】There__________ (be) many great changes in many areas in China since 2000.
【小题7】The teacher has told us many times that light _____________ (travel) faster than sound.
【小题8】We did everything we can____________ (protect) animals in danger.
查看答案和解析>>
科目:初中英语 来源:2012年初中毕业升学考试(山东滨州卷)英语(带解析) 题型:单词拼写
根据句意,用括号内所给动词的适当形式填空。(必要时加助动词或情态动词)
【小题1】Mr Zhang ______(teach)us English three years ago.
【小题2】Peter turned off the computer after he finished______ (write)an e-mail.
【小题3】—Where’s Miss Wang?
一Look,she______(talk)with the students.
【小题4】Mr Liu isn’t here now.He______ (go)to Beijing.
【小题5】The children will go to the zoo if it______ (not rain)this Saturday.
【小题6】There______ (be) a meeting in our school tomorrow afternoon.
【小题7】Mr Green______(watch)TV at this time last night.
【小题8】You’d better______(eat)less food before you go to bed.
【小题9】My teacher told me that light______(travel)much faster than sound.
【小题10】English______ (speak) by many people in the world.
查看答案和解析>>
科目:初中英语 来源:2011年广东省广州市中考英语试卷(解析版) 题型:阅读理解
When the traffic lights turn red, we will stop driving a car or crossing a street. Why is red used for traffic lights instead of other colors?
As we know, scattering (散射) happens when light goes through the air. For the same media(媒质), if the wavelength is long, the scattering will be short. If the wavelength is short, then the scattering will be long.
Of all lights we can see red has the longest wavelength, so the scattering is the weakest. That means the red light travels far. In fact, it travels farther on rainy days.
Using the red light can help drivers in farther areas sec the lights. It helps drivers stow down or stop in lime. If drivers don't see the red light until they are close, they may not be able to stop the car in time. An accident may happen Red can also excite people. We can act more quickly when we see the color red. In a word, red lights help drivers stop in time and help prevent accidents.
1. When the traffic lights turn ______, we will stop driving a car.
A. red B green C. yellow
2.According to the passage, the scattering of the red light is the _______.
A. longest b. weakest C. farthest
3. The underlined word "wavelength" means________ in Chinese.
A.波浪 B.光波 C.波长
4. What can the red light help drivers do?
A. It can help drivers in farther areas see the lights.
b. It can help drivers slow down or stop in time.
C. A and b
5.Which of the following is the best title?
A. Why do accidents happen
b. How does the red light travel
C. Why do we use red traffic lights
查看答案和解析>>
科目:初中英语 来源:2013届江苏省无锡市惠山区初二第二学期月考英语试卷 题型:单词拼写
1.Listen! The radio says something bad________(happen) last night.
2.He spent as much time as he could_______(study) different subjects.
3.The teacher told us that light ___________ (travel ) much faster than sound.
4.I won’t be able to take part in the party if I ________(not be) free.
5.There ____________(not be) a lot of changes in the next 24 hours, are there?
6.They are good friends They often sit on the playground,________(talk) about their future plans.
7.Luckily, he ____________( catch) the first bus and wasn’t late for school.
8.The elderly like to keep pets _____ (make) their life better.
9.Dad said to Mike,"I hope you_________(not forget) to write to me soon.”
10.The plane ______ ( arrive). You can see your mother at once.
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com