如果你不考虑你的未来，你就不会拥有它。
If you don't ________ ________ your future, you won't have it.
据Mike 说, 这是一部很棒的电影
________ ________ Mike, it's a great movie.
她把牛奶收好后转过身来。
She finished ________ the milk ________ and turned around.
A:Welcome to the English Club. My name is Jack. Today we are going to talk about the best ways to learn English.1.
B:No, it’s too hard to understand spoken English in them.
A:2.Do you learn English that way?
B:Yes, I do. It helps to write English very day.
A:Have you ever studied with a group?
B:Yes. I have learend a lot that way.
A:3.
B:Yes, it is. It really improves my listening and speaking skills.
A:What about reading aloud to practice pronunciations?
B:I do that sometimes because I often need to look up new words in a dictionary.
A:What else do you do to improve your English?
B:4.
A:5.. I will be very glad to help you.
B:I will. Thanks a lot. It’s very kind of you.
A.What’s your idea about learning English?
B.I often watch English cartoon films.
C.Do you learn English by watching videos?
D.What about keeping a diary in English?
E.I like English very much.
F.Call me if you have any difficulties.
G.Having conversations with friends is also a good way try, isn’t it?
Has anyone ever told you that eating carrots will help you see in the dark?
This is just one of many incorrect beliefs you may have heard. Below, we have picked out scientific explanations for three mistakes that people make about their eyes. Let's take a look.
Can eating carrots improve your eyesight?
Carrots are rich in vitamin A, which helps the eyes to turn light into information for your brain. This allows people to see in darker places.
However, eating more carrots won't help you see better. A certain minimum amount will help, but a large number of carrots will not give you superhuman vision.
If your parents have bad eyesight, will you have bad eyesight, too?
Myopia(近视)can be passed from parents to children.
A study by the American Optometric Association found that if both parents are myopic, there's a 33 to 60 percent chance that their child will be. For children who have one parent with myopia, the chance is 23 to 40 percent. and it's down to 6 to 15 percent for kids with non-myopic parents.
So if your eyesight is bad, your children might still have good vision.
Do color blind people see the world in black and white?
Color blindness doesn't usually mean that people see the world like an old movie. They usually can't tell certain colors apart, especially green and red. Another commonly confused pair of colors is yellow and blue.
Our eyes have cone cells (视锥细胞) that sense different wavelengths (波长) of light. If these cells don't work properly, color blindness occurs.
There are different levels of color blindness. Some people are only color blind in low light.
However, in the most serious form of color blindness, everything is shades of gray.
1.According to the article, eating carrots ________.
A.stops the brain from seeing
B.doesn't help you see better at all
C.will help you see clearly in the dark
D.is good for your eyes to some degree
2.If both parents have myopia, their child's chance of having good eyesight is ________.
A.40-67% B.33-60% C.23-40% D.6-15%
3.What is the cause of color blindness, according to the text?
A.Watching movies for too long.
B.Getting too little exercise.
C.Cone cells not working properly.
D.Changes in the wavelength of light.
4.Which statement is RIGHT?
A.You can have superhuman vision after eating a large number of carrots.
B.If your parents have bad eyesight. You might still have good vision.
C.Color blind people see the world in black and white.
D.It's unnecessary to protect our eyes.
5.What is the purpose of the article?
A.To offer some advice on protecting your eyes.
B.To clear up some misunderstandings about our eyes.
C.To provide help for improving your vision.
D.To explain how bad eyesight and color blindness form.
Have you ever had dreams about building a robot? Or putting together a spaceship? Or even seeing your face made out of chocolate? Done. All you need is a 3-D printer!
The possibilities of 3-D printing seem endless. All the user has to do is to design(设计) an object on the computer and choose a material(材料) to print in. The printers print in hundreds of different materials including glass, sugar and even skin! When the user presses “print”, the 3-D printer spreads the material layer(层) by layer and like magic the object is produced.
The first 3-D printer was invented in 1986 by an American, Charles Hull. But 3-D printing has only become cheap enough recently for most people to use. Designers now use 3-D printing to create unusual things. The Dutch artist Dirk Vander Kooj prints furniture made from old fridges. And doctors have used 3-D printing to print human body parts! The Telegraph reported in February that scientists from Cornell Medical College even printed a man-made ear.
But like a lot of new technologies, if 3-D printing gets into the wrong hands, it can be dangerous. In 2011 a group of four men in the US used 3-D printing to produce ATM skimmers (提款机盗刷器). These were placed on an ATM and stole over $400,000 from users of the ATM. It is terrible to think thatcriminalslike them might one day use a 3-D printer to print a gun.
But for better or for worse, 3-D printing has been put into use. In a few years, you’ll probably be wondering how you could ever live without your 3-D printer!
1._______ invented the first 3-D printer.
A.Charles Hull B.Dirk Vander Kooj
C.A doctor called Cornell D.Four men in the U.S
2.What is the correct order for people to use a 3-D printer?
a. Choose a proper material.
b. Press the print button.
c. The 3-D printer spreads the material.
d. Use a computer to design an object.
A.a-b-c-d B.d-a-b-c
C.a-c-d-b D.d-c-b-a
3.The underlined word “criminals” in the fourth paragraph might mean ______________ in Chinese.
A.技术员 B.军人 C.罪犯 D.用户
4.According to the passage, people have NOT yet produced _________ with a 3-D printer.
A.some furniture B.a man-made ear
C.ATM skimmers D.a gun
5.What does the writer think of the 3-D printer?
A.It is necessary only for our work.
B.It is helpful but dangerous.
C.It is too expensive for most people.
D.It is useless in our daily life.
