题目

实验室用如图所示的装置制取氧气，回答下列问题： (1)往试管中装入固体粉末时，可先使试管倾斜，用_______把药品小心地送至试管底部 (2)组装该装置时，下列仪器用品的组装顺序是(填序号)________  ___ ①  试管  ②铁架台    ⑧酒精灯    ④木块      答案：（1）纸槽或药匙     （2）②④③①A sunflower is a sunflower. A mobile phone is a mobile phone. But can you combine the two to do something for your local environment? As early as next year it may well be possible. When you have finished with your mobile phone you will be able to bury it in a garden or a plant pot and wait for it to flower.A biodegradable (生物所能分解的) mobile phone was, this month, introduced by scientists. It is hoped that the new type of phone will encourage consumers to recycle.Scientists have come up with a new material over the last five years. It looks like any other plastic and can be hard or soft, and is able to change shape. Over time it can also break down into the soil without giving out any poisonous chemicals. British researchers used the new material to develop a phone cover that contains a sunflower seed. When this new type of cover turns into waste, it forms fertilizers. These feed the seed and help the flower grow.Engineers have designed a small transparent (透明的) window to hold the seed. They have made sure it only grows when the phone is thrown away. “We’ve only put sunflower seeds into the covers so far. But we are working with plant experts 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 constantly throwing their mobiles away. This means manufacturers are under pressure 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 and chemical waste to the environment. A biodegradable cover can offer some relief (缓解) for nature , according to the scientists.“The seed comes out and the flower grows in the pot so you don’t have to concern yourself with the phone when you have finished using it,” said Kerry Kirwan. She leads the research team, which is based at the University of Warwick in Britain.What is the purpose of this passage?A. To tell the popularity of biodegradable cell phones.B. To persuade the reader to buy the biodegradable cell phone.C. To discuss the development of phone technology.D. To introduce an environmentally-friendly cell phone to readers.People throw away their cell phones most probably because _______.A．there is something wrong with themB．no sunflowers can grow out of themC．they are out of fashionD．they are becoming cheaper and cheaperIt could be learned from the passage that _________.A．developing the new type of phone is mainly to protect the environmentB．phone-makers will benefit much more from the new type of phoneC．the new type of phone will certainly be popular with users all over the worldD．the phones that can be recycled are available only in Britain nowWhat might be the best title for this passage?A．Sunflower and Phone.                          B．Plant Your Phone.C．Protect Our Environment.                           D．No Worry about Phone.Where can we probably find the passage above?A. In a novel.    B. In a magazine.       C. In a textbook.        D. In a diary