题目内容
Stop! Listen! What do you hear? You may hear many different sounds. Some of those sounds may be noisy. Noise is loud and unwanted sound.
Noise can be caused by many kinds of machines, such as motorcycles, jet planes, tractors and so on. And, to some people, rock bands are also noise.
What happened to people who live near noisy machines or use them over a period of time? Doctors find that these people have trouble in sleeping, But, most important, constant loud noise can cause a loss of hearing.
Scientists use a unit of measure called a decibel to measure the loudness of a sound. The sound of a quiet room, for example, measures 35 decibels. Talking measures between 40 and 65 decibels. Sounds from traffic and from some rock bands can measure over 120 decibels. Noise at this high level causes the greatest hearing loss.
【小题1】 From the article we know noise is ___________.
wanted sound B. loud and unwanted sound
C. all sounds that you can hear D. comfortable sound
【小题2】 A “decibel” is a _________
A.unit that measures sound | B.kind of noise |
C.machine that makes very loud noise | D.person who hates noise |
help people sleep better B. stop machine
C. cause a loss of hearing D. kill people
【小题4】The main idea of this passage is that __________
noise pollution can be a serious problem
rock bands are noisy
noise can cause people to be mad
some people hate noise deeply
【小题5】 Study the chart below, Which room would be the quietest?
Room | Noise Level |
A | 35 decibels |
B | 120 decibels |
C | 130 decibels |
D | 40 decibels |
C. Room C D. Room D
【小题1】B【小题1】A【小题1】C【小题1】A【小题1】A
解析
Step 1 Write down the subject that you are interested in on a piece of paper. Just get the main idea down. For example, you might write:
Discover more about robots.
Step 2 Stop and think for a moment about what you have already known about your subject. List what you have already known like the sentences below:
1. The first robot appeared in the USA in 1959.
2. A robot can do housework and act as a teacher.
3. Sometimes a robot catches viruses and causes a lot of problems.
Step 3 What can you do with what you want to learn? By asking questions, start writing down questions about the robots on the paper:
1. What might robots be like in the future?
2. What other things can robots do for people?
3. What kind of power will robots possibly use in five years?
Step 4 Armed with your list of questions, you can now go to the nearest library or computer to begin your research. As you learn more about your subject, you'll probably discover some new questions.
For example, you might discover that robots can help scientists explore dangerous places, like the sea and outer space. How? What happened? Asking new questions can help you research your subject more widely.
The next time you find something interesting to research, take time to organize your thinking by asking good questions. And remember that learning more always brings more questions.
【小题1】What does the writer advise us to do when we’re curious about something?
A.To read more books about it. | B.To look it up in the dictionary. |
C.To turn to the teacher for help. | D.To raise questions and find the answers. |
A.Writing down your list of questions. | B.Discussing your questions with others. |
C.Taking your list of questions with you. | D.Putting your list of questions under your arm. |
① List what you want to learn. ② Find new problems.
③ List what you’ve already known. ④ Choose a research subject.
A.④③①② | B.④①③② | C.②③④① | D.③②①④ |
A.Doing Research onRobots | B.Asking Good Questions While Doing Research |
C.Having Interesting Answers on Robots | D.Finding Subjects before Doing Research |