Paula and her husband have four kids, three pet dogs, and a rabbit. When the house is very noisy, Helen, one of the children, is quietly inventing. A year ago, the 10-year-old had to design an anti-smoking poster for a school project. Rather than a poster, she came up with the idea of creating something that shows the average amount of tar(尼古丁) a smoker collects from just four packs of cigarettes.
“I like people to play with things more than read and write,” she says. So she researched her idea on the Internet, found a company in China that could make it, saved up her pocket money and got her idea made.
Paula says her daughter “thinks differently”: Ideas jump into her mind. After she got sunburnt on holiday, Helen invented a small plastic bracelet（手镯) that changes color in the sun, telling you when to put on sunscreen. Several sunscreen companies have expressed an interest in the idea. She also came up with an idea to make a ball filled with water to stop the dog from feeling thirsty. “But we didn’t do anything with it,” says Paula.
Then she pulls out a picture of a special fishing rod she has designed. “ There is a camera on the hook, ” she explains, “and the screen is on the handle，and it shows you if you’ve caught a fish or not. ”
Helen doesn’t want to go to university. She keeps her pink-and-cream bedroom tidy. Paula is amazed and a bit confused by her daughter. “Everything has to be in a certain order,” Paula says. “Her brothers and sisters go with the flow, but with Helen, it’s ‘What time will that be happening?’ or ‘Where am I being picked up from today?’ ”
21. From Paragraph 2, we can infer that Helen _______.
A. is not willing to go to school
B. likes to play with her brothers and sisters
C. prefers making something by herself
D. is good at reading and writing
22. What did Helen invent after she got sunburnt on vacation?
A. The anti-smoking poster.
B. The bracelet telling when to put on sunscreen.
C. The ball providing water for thirsty dogs.
D. The fishing rod telling whether you’ve caught a fish.
23. The underlined phrase “go with the flow” probably means “_______”.
A. do what most people usually do B. set an example to others
C. follow the fashion closely D. do something differently from others
24. The passage is mainly about _______.
A. how Helen helps people give up smoking
B. a little girl’s dream to be a world-famous inventor
C. a 10-year-old inventor’s story
D. Helen’s relationship with her family members