Unit 3 Safety Lesson 14：Accidents Happen—九年级全一册英语冀教版分层培优练
一、单选题
1.You can______ home in two days.
A. go return B.come back to
C.return D. return to
2.The two policemen are______a thief.
A.running away B.running out
C. running after D.running into
3.At the meeting, the managers kept arguing about the problem ______ they reached an agreement.
A. after B. when C. until D. since
4.—Tom, remember to turn off the gas burner(燃气炉) before you leave home.
—Oh, I usually do that. I was just______.
A.on my way B.in a hurry
C. in danger D. in surprise
5.Teachers expect all their students ________ progress day by day.
A.to make B.make C.to take D.take
6.She can always think up good ideas ______ when others have problems.
A.in time B.on time C.at times D.at no time
7.Remember to use sunglasses to stop the sun from ______ directly in your eyes.
A.shine B.shining C.to shine D.shone
8.The two policemen are ______ a thief.
A.running away B.running out C.running after D.running into
9.We left ______ such a hurry that we forgot our tickets.
A.on B.for C.to D.in
10.—How clean the roads are!
—They ______ by the hard-working cleaners every day.
A.are cleaned B.clean C.will clean D.cleaned
二、阅读理解
Traffic lights are red, yellow and green. They are very important signals(信号). Traffic lights are usually placed at busy street corners to help control traffic. Sometimes, they are on streets near schools and shops, too. Most young children are taught what each of the coloured lights means, so everybody can stay safe.
The first traffic signals were used for trains. The signals were put alongside railway tracks(轨道). The colour red was used to mean "stop" because it warned people of danger. A red light was also the easiest colour to see from a distance. Train drivers could see the red "stop" light ahead and had enough time to slow down and stop their trains. A green light was used to mean "take care" and a white light meant "go".
However, there were many dangerous accidents on the train tracks. Some train drivers thought a star shining in the night sky was a white light that meant "go". So the signals were swapped. The "go" light was changed to green and the "take care" light was changed to white.
During these times, people travelled by train or in carts pulled by horses. Years later, when cars were built, people began to drive them because they could travel much faster than horses. However, the road rules for drivers were not very clear and many people were hurt crossing the roads. Yellow warning signs had to be placed beside the roads to remind drivers to take care and allow people to cross safely.
Today, towns and cities all over the world have traffic lights. Red and green lights match the signals used on the railways. Yellow lights are easy to see, so they are used to warn drivers that they should slow clown and prepare to stop.
1. Why was the color red used to mean "stop"
A. It reminded people of traffic rules. B. It helped trains run smoothly.
C. It gave people a warning of danger. D. It was the first color people thought of.
2. What does the underlined word "swapped" in Paragraph 3 mean
A. designed B. exchanged C. suggested D. compared
3. In which order did the "take care" light develop
a. A white light.
b. A green light.
c. A yellow light.
A. a-c-b B. b-c-a C. a-b c D. b-a-c
4. What is the passage mainly about
A. The advantages of traffic lights. B. The history of traffic lights.
C. The importance of traffic lights. D. The meanings of traffic lights.
答案以及解析
一、单选题
1.答案：C
解析：home 为地点副词,其前不加介词;return home意为“回家”,符合语境。故选C。
2.答案：C
解析：run away意为“逃跑”;run out意为“用光”;run after 意为“追赶”;run into 意为“偶然遇到”。根据语境可知此处指两位警察正在追小偷。故选C。
3.答案：C
解析：本题考查连词的辨析。设空前表示"经理们一直争论这一问题",设空后表示"他们达成一致",根据设空前后的内容可知,until"直到……为止"符合题意。故选C。
4.答案：B
解析：on one's way意为“在路上”;in a hurry 意为“匆忙”;in danger意为“在危险之中”;in surprise意为“惊讶地”。根据"Oh, I usually do that."可知,此处是指“我”经常那么做,刚刚只是有点匆忙。故选B。
5.答案：A
解析：考查非谓语动词。句意为：老师们期望他们所有的学生每天都能有进步。expect sb. to do sth.是固定搭配，意为"期望某人做某事"。故选A。
6.答案：A
解析：句意为：在其他人有难题的时候，她总是能及时想出好办法。in time意为“及时”；on time意为“准时”；at times意为“有时”；at no time意为“从来没有；在任何时候都不”。故选A。
7.答案：B
解析：句意为：记得戴太阳镜，以免阳光直射眼睛。stop sb/sth from doing sth 意为“阻止某人/某物做某事”，为固定短语。故选B。
8.答案：C
解析：run away意为“逃跑”;run out意为“用光”；run after 意为“追赶”；run into意为“遇到”。故选C。
9.答案：D
解析：句意为：我们走得很匆忙，以至于把票忘了。固定短语in a hurry意为“匆忙地”。故选D。
10.答案：A
解析：根据时间状语 every day 可知时态是一般现在时；答语的主语They 指代roads，和谓语动词clean 之间是被动关系，故此处应用一般现在时的被动语态。故选A。
二、阅读理解
答案：1-4.CBDB
解析：1.细节理解题。根据第二段第三句"The color red was used to mean 'stop' because it warned people of danger."可知, 红色过去用来表示"停止"是因为它警告人们(此处)有危险。故选C。
2.词义猜测题。根据第三段最后一句"The 'go' light was changed to green and the 'take care' light was changed to white."可知, 绿色与白色信号灯代表的指令发生了互换。由此可推知, 画线词swapped应意为"交换", 与B项意思相近。故选B。
3.细节理解题。根据第二段最后一句中的"A green light was used to mean 'take care' "可知, 最初绿灯代表的是"当心"指令; 根据第三段最后一句中的" 'take care' light was changed to white"可知, 后来白灯代表"当心"的指令; 根据第四段最后一句中的"Yellow warning signs had to be placed beside the roads to remind drivers to take care"可知, 最终黄灯用来代表"当心"指令。故选D。
4.主旨大意题。通读全文可知, 文章主要介绍了交通信号灯的起源和发展史。故选B。

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