河南开放大学24春理工英语4单元自测4【标准答案】

单元自测4（10分）

试卷总分:100 得分:100



一、挑选填空：阅览下面的对话或语句，从A、B、C三个选项中选出一个能填入空白处的最好选项。



1.— Do you prefer a portable?or a clumsy?3D printer?



— ?????????????????????.

A.?No, a portable 3D printer is more useful.

B.Yes, I?would not have a clumsy one.

C.I prefer a portable?one to a clumsy one.



2.—They are testing the 3D printer. Don’t you come and see it?



—What????????????????????????

A.Where is it displayed?

B.?It really matters.

C.That’s fine.?



3.—?Do you?like that technology exhibition?



— Yes, I?like it very much. ?????????????????????.?

A.?It finally comes true.

B.It shows me the impressive magic power of 3D printing.

C.It is a good chance.



4.3D printing is just at the beginning stage. It is not ____.

A.mature

B.?ripe

C.?grown



5.Someone invented the 3D printer many years ago, ____ I don’t remember who.

A.?so?

B.?but?

C.only



6.二、阅览了解：阅览下面的短文，依据文章内容从A、B、C三个选项中选出一个最好选项。



（课外材料）



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?(修正的)?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).__1__

A.A

B.B

C.C

(2).__2__

A.A

B.B

C.C

(3).__3__

A.A

B.B

C.C

(4).__4__

A.A

B.B

C.C

(5).__5__

A.A

B.B

C.C