题目内容：

As scientists in the Netherlands tried to figure out how to build a super flying robot, they learned from one of nature s flyers: the humble fruit fly(果蝇).And by building this robot, they’ve gained new insights into how the fly carries out one of its dangerous tasks.

The robot is called the DelFly Nimble Its wingspan(冀展)is about a foot wide. It has four wings that can beat at 17 times per second, which appear very delicate because they’re made of the same material as space blankets.

In the previous designs. they always had a tail, like a traditional airplane tail, said the robots main designer Matej Karasek. He’s based at the Micro Air Vehicle Laboratory at Delft University of Technology in the Netherlands, and he and his colleagues published their findings on Thursday in Science

“In the previous generations", he said, "flapping wings drove the robot forward while the tail helped to guide and stabilize it. But now the DelFly Nimble is completely controlled by the wings. The challenge then was actually combine the control into the wing movement, and that’s what we achieved, Karasek said

In the latest generation. the wings can each move individually or rotate(旋转)around the body of the robot in order to maximize the machine s agility(灵活 ) The robot can remain in one place in the air for about five minutes on a full battery or fly for more than a kilometer"， Karasek said, "And because the scientists are controlling all the movements, they can use the robot to learn more about how fruit flies actually carry out their dangerous tasks, which has caught the attention of biologists.”

1.Where did scientists get the creative idea of the flying robot?

A. From a fruit fly    B. From the birds wings

C. From some fruit    D. From an airplane

2.What does the underlined word "it" in Paragraph 4 probably refer to?

A. A full battery.    B. A flapping wing.

C. The DelFly Nimble    D. The humble fruit fly

3.What interests biologists most about fruit flies?

A. That they are very tiny insects.

B. That they conduct challenging tasks

C. That they can be easily found in the world.

D. That they have light wings and fly quickly.

4.Where is the text probably taken?

A. A research paper.    B. A travel brochure

C. A health magazine    D. A chemistry textbook