题目内容：

At just 18 years old, Canberra student Lochie Ferrier has already conducted research in a frontier field — aerospace engineering. Aerospace engineering is the primary       of engineering concerned with the science and technology of aircraft and spacecraft.

In 2014, he was one of 80 high school students worldwide who      a six-week science and engineering program at MIT. During the program, he was      by the institute’s scientists, and developed a method to identify inactive satellites. This method, called OASIS, is designed      a way to help manage space debris(碎片), which        operating satellites.

“One solution to this problem is a        robot that can gather pieces of space debris and store them in orbit，” he says. “These pieces could be      to new satellites later, thus      the costs and launch weights of new satellites.” However,      satellite identification technology would be needed for this solution, and that’s what Lochie is working on. “I hope this method would be put into practice in the near future,     in the next 10 years,” he says.

Lochie has made the     of the Young Innovators category of the Australian Innovation Challenge Awards with his OASIS. This category is open to students aged 21 years or     and carries a $ 5,000 prize. If he won, he would use the money to help fund        research into OASIS. “My plan for using the money would be to try to use materials which could stand up to the     environment of space,” he says.

He is also considering how to     the technology to organizations such as NASA and satellite manufacturers.

Lochie’s      in aerospace engineering was aroused by the big dish antenna(碟形天线）at NASA’s tracking station near Canberra，which he visited in his early teens. He said his software design and development teacher at Canberra Grammar School     him, too.   “He taught me valuable project management and skills which I applied to OASIS.”

Lochie has been attending Canberra Grammar School and will soon      exams for admission to universities. He     his time between schoolwork, his personal      projects such as OASIS and the development of apps, rock climbing, and playing classical violin. The teenager is well on his way to realizing his sky-high ambition.

1.A. principle        B. presentation       C. branch            D. criterion

2.A. brought in       B. participated in    C. set up            D. backed up

3.A. guided           B. criticized         C. surprised         D. changed

4.A. in               B. for                C. with              D. as

5.A. follows          B. threatens          C. splits            D. maintains

6.A. recycling        B. repairing          C. creating          D. launching

7.A. switched         B. transformed        C. attached          D. returned

8.A. increasing       B. reducing           C. balancing         D. covering

9.A. optional         B. temporary          C. reliable          D. theoretical

10.A. imagine          B. say                C. suppose           D. consider

11.A. plans            B. finals             C. competitions      D. goals

12.A. under            B. beyond             C. more              D. above

13.A. basic            B. further            C. academic          D. independent

14.A. extreme          B. pure               C. dark              D. friendly

15.A. adapt            B. forward            C. market            D. apply

16.A. influence        B. investment         C. information       D. interest

17.A. inspired         B. served             C. sponsored         D. promised

18.A. join             B. sit                C. hold              D. prepare

19.A. devotes          B. spends             C. separates         D. divides

20.A. instructive      B. competitive        C. technical         D. typica