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Tom said he decided _______ to school the next week.

A. by bike B. on a bike

C. to take a bike D. to ride a bike

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Amos Dudley, a 24-year-old boy who studies digital design at New Jersey University of Technology, felt ashamed about his teeth. But being a student, Dudley didn’t have the money to get braces(牙箍). So, he decided to

3-D print his own and marked down the DIY project in a recent blog post. His braces totaled less than $60, and after wearing them for 16 weeks, his teeth are also getting straighter.

Months ago, he mentioned on his blog that he avoided smiling for a while because he was unhappy with his teeth.

However, clear braces can get pricey, costing up to $8,000. But after studying some images of these expensive clear braces, something comes up on him--they looked like that one which can come from a 3-D printer.

So he decided to hit up his school’s 3-D printing equipment and scanned and printed models of his teeth. He

then made non-harmful plastic molds (模子) around them to make 12 sets of braces.

Dudley, who does not recommend attempting any of this at home said that he didn’t ask a dentist for his project. But the student did get information from journal articles and textbooks. And though this was a perfectly

friendly choice to buy braces. He didn’t accept the project just to save money--he was also up for the challenge. “When I realized that I could do something that was a little bit special, while proving my skills as a designer

and a maker, and fixing something that was making me self-conscious for actually free, I felt it was more than worth the risk.” he said.

1.Dudley got the information on making a 3-D printed braces from___________.

A. a professional magazine

B. a recent blog post

C. journal articles and textbooks

D. a 3-D printer user

2.Why did Dudley choose a 3-D printer braces over-buying them?

A. He didn’t have enough money.

B. He felt ashamed about his teeth.

C. He studies digital design at school.

D. He wanted to be a famous person.

3.What made Dudley get the idea of using 3-D printed braces?

A. The advice from the dentist.

B. The advice from his friends.

C. His major studies at university.

D. The possibility of making 3-D braces.

4.According to the page, Dudley___________.

A.has got a 3-D printer at his home

B.did the project totally for challenge.

C.made each set of braces cost less than 5 dollars

D.supports others to try making their own 3-D braces

5.The article is mainly about___________.

A.a 3-D printer made braces cheaper

B.A college student made fantastic 3-D braces.

C.digital design major student created 3-D printers

D.3-D braces with non-harmful plastic molds became popular

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He is walk that far.

2.萬事具備。我們出發吧?

. Shall we go now?

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Lucy the driving test.

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What her after that?

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詞匯運用

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