Unit 4 Self-test
您好，在完成本单元的学习后，请您完成以下练习题。本练习题满分100分，将按10%计入形考成绩。
您可以反复练习多次，系统默认记录最高分。点击“提交所有答案并结束”按钮视为练习1次，无时间和次数限制。
中途退出，保存答案已作出选择的题目会自动保存答案，下次进入后可对做过的题目进行修改，并继续上次答题，不计入练习次数。
一、选择填空：阅读下面的对话或句子，从A、B、C三个选项中选出一个能填入空白处的最佳选项。
1．—They are testing the 3D printer. Don’t you come and see it?
—What?
Where is it displayed?
It really matters.
That’s fine.
2．— 3D printing is one of the latest technological innovations.
— ____ Maybe its functions are questionable.
Really?
Exactly.
I think so.
3．— What do you want to be?
— .
I want to have a cup of coffee.
I want to be honest.
I would study computer science than dancer.
4．— Do you prefer a portable or a clumsy 3D printer?
— .
No, a portable 3D printer is more useful.
Yes, I would not have a clumsy one.
I prefer a portable one to a clumsy one.
5．— Do you like that technology exhibition?
— Yes, I like it very much. .
It finally comes true.
It shows me the impressive magic power of 3D printing.
It is a good chance.
6．There are ____ calls for lawmakers to consider copyright laws.
increase
increasing
increased
7．3D printing is just at the beginning stage. It is not ____.
mature
ripe
grown
8．Flowers grow well in a warm climate. Similarly, technology ____ in a harmonious society.
is flourishing
will flourish
flourishes
9．She’s not very optimistic ____ the development of 3D printing.
to
about
at
10．Touch- ____ 3D maps help the blind too much.
responsive
speaking
listening
11．Someone invented the 3D printer many years ago, ____ I don’t remember who.
so
but
only
12．3D printers have spread from labs to industrial factories, ____ they are being cheaper and cheaper.
so
and
yet
13．____ the new law is used one day, I hope it will not punish people using 3D printers for personal purposes.
when
why
If
14．She’s been interested in computer science ____ she was eight.
before
since
ago
15．This 3D printer was designed ____ produce snacks.
to
for
with
16．二、阅读理解：阅读下面的短文，根据文章内容进行判断，正确为“T”，错误为“F”。
Passage 1 (教材课文原文)
“The printer did not always manage to spread the plastic evenly, making some of the ribs of the honeycomb structure of the block uneven,” reported ARN (Australian Radio Network) to the surprise of no one who has used a 3D printer. But the architects remain optimistic. The first few printed blocks are meant to be test pieces as they improve the process.
It takes about a week to print a 3-meter high block right now. The project’s leaders hope to eventually get that down to two hours and finish the first of 12 rooms in a year, and the entire house in less than 3 years.
Ultimately, 3D Print Canal House is an architectural research project, one that is very much being conducted in the public eye: you can actually buy tickets to visit the construction site for 2.50 Euros.
The top floors will become more ornate, for example, as newer techniques are incorporated. They’ll explore the possibilities of 3D printing, like the honeycomb walls or an entire room recycled, redesigned, and built anew. Nobody’s going to move into a 3D printed house soon, but, if anyone ever does, something might be learned from this experiment by the canal.
According to the passage, the 3D printer can type with plastic evenly. 1
2. This 3D printer printed some blocks to test its work. 2
3. The project’s leaders will finish the entire house in less than 3 years. 3
4. 3D Print Canal House is printed to live. 4
5. The canal house will be decorated more. 5
(1)
(2)
(3)
(4)
(5)
17．二、阅读理解：阅读下面的对话，选择合适的内容将对话补充完整。
（教材对话原文）
Michael: They are testing the 3D printer. Don’t you come and see it?
Lucas: What? Never heard of it.
Michael: It is one of the most latest technological innovations.
Lucas: Really? 1 .
Michael: Come on! You should learn to be open-minded.
Lucas: 2
Michael: The 3D printing technology could be used in construction, engineering, biomedicine, and many other fields. It can print anything, a house, a car, even a liver!
Lucas: That can’t be true. I will never believe this.
Michael: 3 .All these will be absolutely carried out by 3D printers. There’s a company called Natural Machines has introduced a 3D printer for food producing.
Lucas: I guess that there are a lot of procedures involved in this process. So this printer must be very big.
Michael: 4 . It can print all kinds of dessert and starter.
Lucas: Is it expensive?
Michael: 5 .
A. It is about $.1,000
B. Maybe its functions are questionable
C. It is really true.
D. What are the main functions of it?
E. In fact, it is as big as an oven
(1)
(2)
(3)
(4)
(5)
18．二、阅读理解：阅读下面的短文，根据文章内容从A、B、C三个选项中选出一个最佳选项。
（课外资料）
In the grass, a baby duck was hatched (孵化) out in a college biology lab with a backward left foot. At the time, it probably wouldn’t have survived, if Mike Gary didn’t recommend a proper operation to cut off that bad foot.
Months after the healing process, engineers at Novacopy Company produced a 3D printed model that would be used to create a prosthetic (修复的) foot for the duck. Considering that ABS plastics were not flexible enough for this type of exercise, the Novacopy company made a three-dimensionally modeled foot made of silicone, with the hope to create a permanent prosthesis(假肢) for the duck.
It took just 13 hours to produce. This 3D prosthesis demonstrated the 3D technologies can be used not only for human application, but also in foreign subjects such as animals and other medical treatments.
Where was the baby duck hatched out? 1
A. In a college biology lab.
B. In a back yard.
C. In Noacopy Company.
2. What was wrong with the baby duck? 2
A. It didn’t survived.
B. It was born with a backward left foot.
C. Mike Gary cut off that bad foot.
3. Could ABS plastics be used to produce a 3D printed model that would be used to create a prosthetic foot for the duck? 3
A. No, because ABS plastics were not flexible enough.
B. Yes, but it could only be produced by Novacopy Company.
C. Yes, because it was made of silicone.
4. How long did it take to create a permanent prosthesis for the duck? 4
A. 10 hours.
B. 13 hours.
C. 30 hours.
5. What did the last sentence of this passage indicate? 5
A. 3D technologies can be used only for human application.
B. 3D technologies can be used only for foreigners.
C. 3D technologies can be used to human, animals and other medical treatments.
(1)
(2)
(3)
(4)
(5)
