While it may sound like something crawling out of your horrible dreams, cyborg cockroaches (蟑螂机器人) have arrived as friends rather than enemies.

Scientists in Japan have designed a new remote-controlled insect, equipped with a battery “backpack” powered by solar panels. The cockroach, which is part insect and part machine, is intended to enter dangerous areas, monitor the environment or take on search and rescue missions without needing to be recharged.

Famously able to survive a nuclear war, cockroaches have been the inspiration for a number of technologies in recent years. Different teams of scientists have designed remote-controlled robo-bugs that can climb walls, carry objects and find humans during search-and-rescue missions.

The cockroaches are still alive, but wires attached to their two “cerci” (尾蚴) send electrical impulses that cause the insect to move right or left. A battery is necessary for the sending and receiving these electrical signals, which needs to be charged up. While it’s possible to build docking (对接) stations for recharging the battery, the need to return and recharge could disrupt time-tight missions.

The team wanted to create a more practical version that did not need to return to a docking station when it ran out of power. Therefore, they designed a solar cell that could constantly ensure that the cockroach stays charged while it works. However, cockroaches have a limited surface area available for all the components necessary to move its legs and keep it powered. The solution was to design a special “backpack” that could carry both the wireless leg-control module and rechargeable lithium polymer battery. This was attached to the top of the insect on its thorax (胸腹), and was 3D printed to fit perfectly to the curved surface of the Madagascar cockroach. It allowed for this electronic device to be stably installed on the insect for over a month.

【小题1】What are the functions of cyborg cockroaches?
①Climbing walls.   ②Entering unsafe areas.   ③Foretelling risks.
④Rescuing humans. ⑤Generating Power.   ⑥Monitoring the environment.

A．①②③

B．②③⑤

C．③④⑥

D．②④⑥

【小题2】What is the meaning of the underlined word “disrupt” in Paragraph 4?

A．Interrupt.

B．Extend.

C．Execute.

D．Shorten.

【小题3】What is the key factor in controlling a cyborg cockroach remotely?

A．The size of a cockroach.	B．The leg-control module.
C．The lifespan of a cockroach.	D．The energy harvesting device.

【小题4】What’s the main idea of this text?

A．Cockroaches are the inspiration of inventions.

B．The technology of solar panels is widely used.

C．Search-and-rescue can’t be emphasized too much.

D．Scientists have created a remote-controlled cyborg cockroach.