题目内容：

阅读理解。

Robots are supposed to run on batteries, right? Well not all of them.

Scientists in England have built a kind of small robots that get their energy from dead flies, bad apples, or sugar.

One robot, called Slugbot, was even designed to hunt(猎取) garden slugs for dinner!

What's up with all that food?

Well, scientists at the Bristol Robotics Laboratory want to invent robots that can operate for a long time in dark, dirty, or dangerous places.

Many of those spots, like the seafloor or Antarctica, don't have electrical sockets(插座).

So inventor Chris Melhuish came up with a better idea: Build robots that get their energy just like animals do by hunting and eating food from their environment.

One robot, called Ecobot Ⅱ, could run for 12 days on a diet of eight flies! Of course, it'd still get a lot more power from one AA battery, though.

Melhuish says his team is now working on a new and improved robot, called Ecobot III, which will have a better digestion system.

It seems that after an eight fly dinner, Ecobot II couldn't deal with the leftover(剩下的) "waste".

Maybe restrooms in the future will have signs for boys, girls, and robots.

1.An ordinary robot usually .

A．gets its energy from sugar

B．depends on batteries to work

C．can get food for itself

D．can work a few minutes without energy

2.From the passage, we can infer that a slug .

A．is a kind of insect             B．is a kind of fish

C．can't see Slugbot               D．can eat Slugbot

3.What kind of robots do inventor Chris Melhuish want?

A．Robots that can provide people with food.

B．Robots that can work in dangerous places.

C．Robots that can get energy for themselves.

D．Robots that can be very small.

4.Which of the following is NOT true according to this passage?

A．Robots need to work in places that have no sockets for power.

B．Melhuish is not very satisfied with Ecobot Ⅱ.

C．Maybe there will be three kinds of restrooms in the future.

D．Ecobot Ⅱ can turn its flies into energy completely.

5.What does the passage mainly tell us?

A．Robots are hard things to invent.

B．Scientists are working to improve robots.

C．Robots in the future need to eat food like human.

D．Scientists at the Bristol Robotics Laboratory are good at robots.