阅读下面短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

Nearly half of elementary and high schools in the US use the Presidential Fitness Test.It checks kids’ fitness levels.Students are tested at least twice a year.In 1956, US President Eisenhower created the test, and it has been a tradition in schools since 1966.

There are five activities in the test: sit-ups(仰卧起坐), push-ups(俯卧撑), sit and reach, endurance run or walk and shuttle run(折返跑).Students who get scores at or above 85 percent on all the activities can get a Presidential Physical Fitness Award.

The test encourages students to live a healthy and active life.Students taking the test are really testing their limits, according to the US National Association for Sport and Physical Education.

China has a similar test: the physical education(PE) test.Beginning at the age of 7, students in China are tested twice a year to check if they are healthy and strong.They also finish activities like the endurance run, sit-ups and the shuttle run.

However, unlike students in the US who get awards, Chinese students get points in PE tests.The highest score is 100.For junior school students, the PE test is more important because it is worth 30 to 40 points in the entrance exam for senior high school.In order to get a good score, most students begin to prepare for the test in their junior one year.

1.Who can get a Presidential Physical Fitness Award?

A.Students who finish all the activities.

B.Students who finish first on the test.

C.Students who make the greatest progress in the test.

D.Students who get scores of 85 percent or above on all the activities.

2.The Chinese PE tests and the American Presidential Fitness tests are similar in ____

A.Students are tested twice a year.

B.Students get awards.

C.Students get scores.

D.Students must finish push-ups.

3.What’s the purpose of the test?

A.To encourage students to live happily and actively.

B.To help students prepare for college entrance exams.

C.To encourage students to get good scores.

D.To help students learn how to overcome difficulties.

阅读下面短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

In some science fiction movies, evil robots refuse to die, no matter how hard people fight back.

Now science fiction has become science fact.For the first time, scientists have made a robot that can take a beating (挨打) and keep on going.Scientists from Cornell University made t he robot, which looks like a spider with four legs.

Until now, even the most advanced (先进的) robot was almost certain to break down when it was damaged.That is because its computer inside simply doesn’t know how to make the machine work after its shape has changed.

To deal with this problem, the scientists put eight motors (发动机) and two sensors (传感器) that read how the machine is working.They all give signals to the machine’s software.Using this information, the computer can then figure out the machine’s shape at any moment.

The new technology is a big advance in robot-making, scientists say, and it’s far from scary.It may someday help scientists create better artificial (假的) arms and legs and give new freedom to people who lose them.It might also help scientists understand how people and animals figure out their own sense of place in space.

“It has been difficult to design robots that can work well when the environment changes or when it’s damaged,” says Olaf Sporns of Indiana University in US.“With this work, we are nearer to solving this problem.”

1.Why do robots easily break down when they are damaged?

A.They cannot repair themselves.

B.The computer has changed a lot.

C.They have no computers inside.

D.The computer cannot work if the robot changes.

2.The new technology allows the robot to _________.

A.do house work for humans

B.keep working after being damaged

C.remember a lot of information

D.tell people where it is

3.The underlined word “them” in Paragraph 5 refers to ________.

A.sensors B.robots

C.arms and legs D.scientists

4.How do the sensors in the robot work?

A.They can replace the computer when it’s broken.

B.They can find out where the damage comes from.

C.They help the computer learn the robot’s condition.

D.They can send signals to the person who uses the robot.

5.The passage is probably from____________.

A.an advertisement B.a tour guide

C.a notice D.a newspaper

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