题目内容：

Born without the right hand, 12-year-old Cassie Stewart often had to sit out during music classes. Cassie was sad that she couldn’t take   ____   and would quietly walk toward the back of the   ____  .

Now she doesn’t have to, thanks to an  _____   by a local high school student. Nicholas Brown, 15,  ____   and tested a 3-printed prosthesis(义肢)for Cassie and Andrew Mindy, another student who also has a   ____  , to use during music classes. “I wouldn’t really call it a prosthetic hand,” said technology  _____  , Brad Fessler, who helped Nicholas  _______ the project. “it’s a prostheses   ______made for playing instruments. Generally, in the prostheses world, everything is custom-made to  _____   different people,” Fessler said. “ in this case, we were able to use the same exact prosthesis for each student,  ____   their sizes are different. Everything is designed to be adjustable. They put the prosthesis on, and they can use their other hand to ______   it.”

    The idea for the project was born when Cassie’s music teacher, knowing Fessler had just bought a 3-D printer, emailed him to see   _____  he could find a way to help her students. Immediately, Fessler thought of Nicholas, one of his   ______  students. “ He is really brilliant,” Fessler said. “ He just  ______  on things really quickly.”

They worked together to find a(n)  ______  for Cassie and Andrew. “Coming up with the original idea was the hardest part,” Nicholas said. “But the  _______ of it was just improving the idea and finding out what works.”

They    ____  Cassie and Andrew with the final product this week. “I was so glad that she could use it and that it was actually   _____ ,” Nicholas said. Cassie was most  _____   about the guitar. “I think it’s a really cool instrument,” she said. “I’m  _______ they did it for me,” she added.

1.A. care    B. part    C. action    D. interest

2.A. door    B. office    C. classroom    D. playground

3.A. example    B. experiment    C. instruction    D. invention

4.A. used    B. bought    C. repaired    D. designed

5.A. question    B. concert    C. talent    D. disability

6.A. fan    B. student    C. teacher    D. prizewinner

7.A. on    B. for    C. with    D. into

8.A. surely    B. specifically    C. suddenly    D. secretly

9.A. fit    B. surprise    C. recognize    D. challenge

10.A. even though    B. because    C. as though    D. unless

11.A. wear    B. play    C. adjust    D. touch

12.A. when    B. if    C. how    D. why

13.A. star    B. university    C. poor    D. honest

14.A. misses out    B. picks up    C. looks back    D. comes down

15.A. arm    B. doctor    C. instrument    D. solution

16.A. rest    B. fact    C. meaning    D. difficulty

17.A. treated    B. examined    C. presented    D. filled

18.A. changing    B. working    C. existing    D. appearing

19.A. excited    B. strict    C. worried    D. confused

20.A. sorry    B. satisfied    C. confident    D. grateful