I can honestly say that I never felt so proud of someone in my entire life. It wasn't because she did a sport or anything like that. It was because she was afraid of something and conquered (克服) that fear with confidence and a fire I hadn't seen before.

　　All day I would find myself just looking over at her and smiling. She might be wearing the finalist medal but I felt like I won that day. I won the chance to see my girl shine.

　　Shine on, sweet baby.

28. Kelly is nervous when .

A. situations are new to her B. boys are around her

C. she changes into a leader D. she is away from her mom

29. We can know from Paragraph 3 .

A. the race began in the early morning B. the whole family gave Kelly support

C. Kelly was eager for her turn in the race D. Kelly prepared for her brother's birthday party

30. Seeing Kelly's performance in the race, the author felt .

A. excited and proud B. anxious and uneasy

C. curious and concerned D. worried and hesitant

31. The author "felt like I won that day" because Kelly .

A. expressed love to her B. won the gold medal

C. took part in the sport D. overcame the fear

　　The oddness (反常) of life in space never quite goes away. Here are some examples.

　　First consider something as simple as sleep. Its position presents its own challenges. The main question is whether you want your arms inside or outside the sleeping bag. If you leave your arms out, they float free in zero gravity, often giving a sleeping astronaut the look of a funny balled (芭蕾) dancer. "I'm an inside guy," Mike Hopkins says, who returned from a six-month tour on the International Space Station. "I like to be wrapped up."

　　On the station, the ordinary becomes strange. The exercise bike for the American astronauts has no handlebars. It also has no seat. With no gravity, it's just as easy to pedal violently. You can watch a movie while you pedal by floating a microcomputer anywhere you want. But station residents have to be careful about staying in one place too long. Without gravity to help circulate air, the carbon dioxide you exhale (呼气) has a tendency to form an invisible (隐形的) cloud around you head. You can end up with what astronauts call a carbon-dioxide headache.

　　Leroy Chiao, 54, an American retired astronaut after four flights, describes what happens even before you float out of your seat, "Your inner ear thinks you're falling. Meanwhile your eyes are telling you you're standing straight. That can be annoying-that's why some people feel sick." Within a couple days-truly terrible days for some -astronauts, brains learn to ignore the panicky signals from the inner ear, and space sickness disappears.

Space travel can be so delightful but at the same time invisibly dangerous. For instance, astronauts lose bone mass. That's why exercise is considered so vital that National Aeronautics and