题目内容：

From an early age,Parker always said that he would be an astronaut when he grew up.But no matter how much he studied and took tests,he was never______to fly in space.______,he grew over the maximum age for taking the selection tests.In other words,he would never be able to fulfill his______.

Thinking about ll the time and______Parker had put into trying to be an astronaut,people felt______for him. Despite what he was told about having to______his ambition,Parker continued training and studying,______he was going to have the tests next month.

He______as he got older,and when he was a very old man he heard that they were doing some very important

____experiments.For those experiments they needed a very______.astronaut.Parker,who now walked with a_____,

was the only old man in the whole world who was______to fly in a rocket.Therefore,Parker found himself flying in

____,all with the help of science.It was clear that the______gained during those missions helped to cure one of the worst sicknesses for old people,and Parker was______as a hero.

Photos of the astronaut with a walking stick and no teeth______all over the world,and became a______of how you can never train or learn too much.It showed that______effort always brings______.even though it may not be in the form we had first______.

1.A. noticed    B. selected    C. invited    D. permitted

2.A. Secretly    B. Suddenly    C. Luckily    D. Finally

3.A. dream    B. task    C. need    D. belief

4.A. money    B. energy    C. effort    D. practice

5.A. happy    B. sorry    C. nervous    D. calm

6.A. ignore    B. forget    C. develop    D. abandon

7.A. so that    B. now that    C. as if    D. even though

8.A. carried on    B. went on    C. turned off    D. got off

9.A. electrical    B. physical    C. medical    D. political

10.A. sick    B. experienced    C. active    D. old

11.A. map    B. stick    C. guide    D. candle

12.A. planned    B. trained    C. forced    D. allowed

13.A. silence    B. danger    C. action    D. space

14.A. knowledge    B. experience    C. money    D. opportunity

15.A. replaced    B. educated    C. praised    D. affected

16.A. moved    B. flew    C. spread    D. took

17.A. symbol    B. mark    C. case    D. doubt

18.A. desperate    B. persistent    C. cautious    D. apparent

19.A. award    B. prize    C. result    D. reward

20.A. expected    B. guessed    C. suggested    D. proved