15.
(C)閱讀下列短文,從每小題的A、B、C、D中選出最佳答案.
If your pen broke at school,what would you do?You would go to a shop and buy a new one.What if you could simply print out a real,working pen with your 3-D printer without leaving your room?
Ten years ago people could only see 3-D printing in science fiction movies.But now 3-DR printing is here and it's bringing big changes.
3-D技術(shù)
Unlike normal printing that can only copy a 2-D picture with ink,3-D printer can build almost anything made from any material.The printer layers(使…分層堆放) the material in different shapes to create the object you want to copy.
The 3-D printer has been used to make many different things.People have made cups,cars and even an airplane with it.
Doctors have been using 3-D printers for several years.People's nervous systems have been printed out in 3-D form for medical research.Some body parts have been printed and used in hospital.Several months ago,doctors used a 3-D printer to rebuild the face of a person who had a bad accident.In the future,it is expected that the printer will make human organs to save more lives.
However,there are drawbacks to the printer.At the moment,printing can be quite slow and it's still rather expensive.The average(平均的) price of a household printer is around $1,700,not including the cost of the materials.
But as the technology develops it won't be long before these disadvantages are improved.Only time will tell where this new technology will take us.
61.People could see 3-D printing inB ten years ago.
A.large high schools
B.science fiction movies
C.digital camera shops
D.large hospital
62.People still can't make a (n)C with a 3-D printer so far.
A.a(chǎn)irplane
B.face
C.organ
D.car
63.What does the underlined word"drawbacks"mean?A
A.缺點(diǎn)
B.趨勢
C.優(yōu)點(diǎn)
D.特長
64.Which of the following is TRUE?C
A.The normal printer can build 3-D objects you want.
B.No nervous systems are printed out in 3-D form.
C.The 3-D printing can be cheaper and faster in the future.
D.The printer has made human organs to save lives
65.What's the best title of this passage?B
A.The disadvantages of 3-D printing
B.The changes brought by 3-D printing
C.The rapid development of science
D.The differences between 2-D and 3-D.