An 18-yek--old boy from New Jersey,Justin Beckerman,has built his own submarine (潜水艇) ！
He calls it The Nautilus.
Justin spent six months and about $ 2,000 building the submarine from the parts he found in stores or online.
"I spent about one or two weeks designing it," Justin said in an interview. " I spent about two more weeks looking for all the parts."
The submarine uses ballast tanks (压载舱) to stay underwater. A ballast tank is part of a submarine that holds water. It lets in water to help the submarine go down and lets water out to help the submarine go up.
Justin also had to work out how to start the submarine. "The submarine has four battery systems (系统) 一three nain systems and one emergency (紧急情况) system,he said. The submarine's batteries allow it to move underwater for about two hours.
Testing a machine underwater can be dangerous,so Justin's parents keep a close watch on him every time he goes down.
He has also made an emergency plan to keep him safe if something goes wrong. He uses a PA system to communicate when he is underwater.
Justin has been building things since he was young" Justin starts with a dream,and he keeps it until Jie works out how to realize it," said Justin's dad. Justin has built other smaller submarines,but not all have been successful. One of them failed because its materials were not strong enough. But Justin kept trying,and finally built the working submarine he has now.
What advice does Justin have for students?"Keep thinking,creating and dreaming."
71. What's the name of Justin's submarine?
Its name is.
72. How long did Justin work on his submarine?
He worked on it.
73. How many battery systems does the submarine have?
It has battery systems.
74. What does Justin do to keep him safe?
He makes an emergency plan,andwhen he is underwater.
75. What can we learn from Justin?
We can learn that we should.
71. The Nautilus 72. for six months
73. 4/four 74. uses a PA system to communicate
75. keep thinking,creating and dreaming
科目：初中英语 来源： 题型：
30. We are discussing at the moment.
A. where we are going to put our new dresser
B. where are we going to put our new dresser
C. how can we put our new dresser well
D. when are we going to put our new dresser
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Long long ago,there was a kind lady. Every day,she baked bread for her family and an extra loaf (—条面包) for any hungry passer-by (路人). She placed the extra bread beside a window. When the woman placed the bread,she always gave a prayer for her son. Her son had gone to a faraway place and she hadn’t heard from him for a very long time.
Every day,a tramp (流浪汉) came and took away the bread. He said when he was leaving, "The evil you do remains with you;the good you do comes back to you."The woman felt angry. ” Not even a word of thanksshe said to herself with unhappiness. This went on,day by day.
Finally,the woman became so angry that she decided to get rid of the tramp. She added poison to the bread she was going to offer to the tramp!When she was placing it,her hands
shook. "Look at what Fve done!" She immediately threw the bread into fire and made another one.
As usual,the tramp came and picked up the bread. " The evil you do remains with you; the good you do comes back to you," he said again and left.
That evening,there was a knock on the door. Surprisingly,the woman's son was standing in the doorway. He was tired and weak. ” Mum,it's a miiacle (奇迹) that I can come back home!While I was on a mile away,I was so hungry that I almost gave up. But just then an old tramp gave me a loaf of bread. He said that the bread was his food every day. But today,I should get the bread,for I needed the bread much more than he did!"
The lady’s face turned pale when she heard those words. The tramp's words suddenly came back to her, ” The evil you do remains with you;the good you do comes back to you."
71. Where did the woman place the extra bread every day?
She placed the extra bread.
72. Who took away the extra bread every day?
took away the extra bread every day.
73. How did the old tramp save the woman's son?
The old tramp saved the woman's son by
74. Why did the woman's face turn pale when she heard her son's words?
Because if she ,her son might die.
75. What can we learn from the passage?
We can learn ""
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30. How do you like the talk you listened to yesterday?
—It couldn’t be . I don't even want to talk about it.
A. good B. better C. worse D. bad
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第二节:听下面两段对话，每段对话后有几道小题，请 根据每段对话的内容和后面的问题,从所给的三个选项中 选出最恰当的一项。每段对话读两遍。
听第11段对话，回答第11至12小题。
( )11. How far is it from the woman's home to the Sun Library?
A. About 10 kilometers.
B. About 12 kilometers.
C. About 6 kilometers.
( )12. What does Jack enjoy doing in the electronic reading rooms?
A. Reading some magazines.
B. Reading some history books.
C. Watching English movies.
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25. When I studied in America,things were really different from the way at home.
A. it is B. it was C. they are D. they were
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Throw a stone across the water and see how many times it skips (跳) .Have you played this game before? The more times the stone skips,the more cheers you will get. But do you know the secret behind its success?
With the help of high-speed cameras,scientists at Brigham Young University in the US have found out the secret skills of stone skipping.
The first step is to choose the right stone. " Use flat round stones (disc-shaped stones) , and find a weight that allows you to put a lot of spin on them," Tadd Truscott,an assistant professor,told The Huffington Post. Discs are usually easier to skip than rounded stones.
Then,here comes the key part： find the right angle. According to the Guinness World Records,the world record for stone skipping is 88 skips set in 2013 by an American called Kurt Steiner.
Professor Truscott said the skill depends on what angle the thrower chooses to throw a stone at. The best angle for discshaped stones is close to 20 degrees (度) . But the heavier the stone is,the flatter this angle should be.
If you find 20 degrees hard to measure,you can try another way. Give a great deal of backspin (下旋) to a rounded stone,so it will go under the water and then pop up and out of the water.
"To make it,you need to throw the stone at a much higher angle than for the usual skipping,M Truscott said to The Huffington Post.
71. What is the article mainly about?
It is mainly about.
72. How did scientists find out the secret skills of stone skipping?
They found out them.
73. What are the secret skills?
They are.
74. Who is Kurt Steiner according to the article?
He is an American who set in 2013.
75. What is the best angle for disc-shaped stones?
The best angle is.
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29. None of them talked. They finished their meal in.
A. silence B. order
C. place D. public
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科目：初中英语 来源： 题型：
57. 我们必须等到交通灯变绿才能过马路。
We mustn't cross the street the traffic lights turn green.
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