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A sunflower is a sunflower. A mobile phone is a mobile phone. But can you combine(联合) the two to do something for your local environment? It may be possible. When you have finished with your mobile phone, you will be able to bury(埋) it in the garden or a plant pot and wait for it to flower.

A biodegradable(生物可降解的) mobile phone was introduced by scientists. It is hoped that the new type of phone will encourage people to recycle. Scientists have thought of a new material over the last five years. It looks like any other plastic, but overtime it can break down into the soil without giving out any poisonous chemicals(有毒的化学物质). British researchers used the new material to develop a phone cover with a sunflower seed(种子). When this cover changes into waste, it forms nitrates(硝酸盐). These feed the seed and help the flower grow. “We have only put sunflower seeds into the cover so far. But we're trying to find out which flowers would perform best. Maybe we could put roses in next time,” said one scientist.

As phone technology is developing so quickly, people are always throwing their mobile phones away. This means producers are under pressure(压力) to find ways of recycling them. Some 650 million mobile phones have been sold this year. Most of them will be thrown away within two years, adding plastic, heavy metal(金属) and chemical waste to the environment. A biodegradable cover can reduce the harm to nature, according to the scientists. “The seed is released(释放) and the flower grows in the pot, so you don't have to worry about the phone when you have finished using it,” said Kerry Kirwan, the leader of the research team, which is based at the University of Warwick in Britain.

1．Scientists did this type of research about biodegradable mobile phones in order to ________.

A．make the mobile phones more beautiful	B．encourage people to recycle
C．find a new way to grow flowers	D．produce more mobile phones

2．Millions of mobile phones have been sold this year and people will ______ within two years.

A．bury most of them in the garden	B．put sunflower seeds into most of them
C．take out their cover	D．throw most of them away

3．What does the underlined phrase “break down” mean?

A．change into chemicals

B．not work

C．be divided

D．break out

4．We can infer(推断) from the passage that _________.

A．the new type of mobile phones is already on the market

B．some 650 million mobile phones have been sold within two years

C．British scientists are doing the research

D．roses perform best in this type of mobile phones

5．What’s the best title of the passage?

A．the Harm to Nature	B．the Developing Phone Technology
C．Phones and Flowers	D．Mobile Phones and Environment