Can plants eat people? Probably not, but there are many plants that eat meat. Some of them are big. And thay can eat small animals. One famous meat-eating plant is Venus Flytrap(捕蝇草).

Venus flytrap is a very strange plant. It grows in dry parts of the United States. Its leaves are like the pages of a book. They can open and close very quickly. Inside the leaves, there are three small hairs. If a fly touches one of the hairs, the leaf closes quickly, so the fly cannot get out. In about half an hour, the leaf presses the fly until it is dead. Then, the plant covers the fly and slowly eats it.

Why do plants do that? Most plants get what they need from the sun, the air, and the ground. In some places, the ground is very poor. It doesn't have all these important things, especially nitrogen (氮). Animal meat has a lot of nitrogen, so some plants eat meat to get what they need. Let's hope that bigger plants don't get the same idea!

1.Venus flytrap is a kind of______.

A. plant B. animal C. food D. meat

2.Venus flytrap grows in______.

A. most parts of the world

B. parts of Africa

C. dry parts of the United States

D. wet parts of England

3.From the passage, we learn that______.

A. all plants can eat people

B. all plants can eat animals

C. some plants can eat people

D. some plants can eat animals

4.The underlined word"presses"probably means______ in Chinese.

A. 挤压 B. 关上 C. 打开 D. 松开

5.—Why do some plants eat animal meat?

—Because______.

A. plants are dangerous to animals

B. animals are dangerous to plants

C. plants want to get what they need from animal meat

D. plants want to protect themselves against animals

How fit are your teeth? Are you lazy about brushing them? Never fear. An inventor is on the case. An electric toothbrush senses how long and how well you brush, and it lets you track(跟踪) your performance on your phone.

The Kolibree toothbrush was exhibited at the International Consumer Electronics Show in Las Vegas this week. It senses how it is moved and can send the information to an Android phone or iPhone through a Bluetooth wireless(无线的) connection.

The toothbrush will be able to teach you to brush right(don't forget the insides of the teeth!) and make sure you're brushing long enough. "It's kind of like having a dentist actually watch your brushing on a day-to-day basis," says Thomas Serval, the French inventor(发明家).

The toothbrush will also be able to talk to other applications(设备) on your phone, so developers could, for example, create a game controlled by your toothbrush. You could score points for beating monsters among your teeth. "We try to make it smart and fun," Serval says.

Serval says he got the idea by his experience as a father. He would come home from work and ask his kids if they had brushed their teeth. They said "yes," but Serval would find their toothbrush heads dry. He decided he needed a brush that really told him how well his children brushed.

The company says the Kolibree will go on sale this summer, from $99 to $199, and the U.S. is the first target market.

1.All the following statements are wrong EXCEPT_________.

A. It can sense how users brush their teeth. B. It can track users' school performance.

C. It can check users' fear of seeing a dentist. D. It can help users find their phones.

2.What can we learn from Serval's words in Paragraph 3?

A. You will find it enjoyable to see a dentist.

B. You should see your dentist on a day-to-day basis.

C. You can brush with the Kolibree as if guided by a dentist.

D. You'd like a dentist to watch you brush your teeth every day.

3.What can we infer(推断)about Serval's children?

A. They were unwilling to brush their teeth.

B. They often failed to clean their toothbrushes.

C. They preferred to use a toothbrush with a dry head.

D. They liked brushing their teeth after Serval came home.

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