账务处理软件所处理的记帐凭证的来源有（）。 A.人工凭证 B.机制凭证 C.派生凭证

Different colours can affect us in many different ways; that’s according to Verity Allen. In a new programme “Colour me Healthy”, Verity looks at the ways that colours can influence how hard we work and the choices we make. They can even change our emotions and even influence how healthy we are. 

“Have you ever noticed how people always use the same colours for the same things?” says Verity. “Our toothpaste is always white or blue or maybe red. It’s never green. Why not? For some reason we think that blue and white is clean, while we think of green products(产品)as being a bit unpleasant. It’s the same for businesses. We respect a company which writes its name in blue or black, but we don’t respect one that uses pink or orange. People who design（设计）new products can use these ideas to influence what we buy.”

During the programme, Verity studies eight different colours, two colours in each part. She meets people who work in the colour industry, from people who design food packages, to people who name the colours of lipsticks. Some of the people she meets clearly have very little scientific knowledge to prove their ideas, such as the American “Colour Doctor” who believes that serious diseases can be treated successfully by the use of coloured lights. However, she also interviews real scientists who are studying the effects of green and red lights on mice, with some surprising results. 

Overall, it’s an interesting show, and anyone who watches it will probably find out something new. But because Verity goes out of her way to be polite to everyone she meets on the programme, it’s up to you to make your own decisions about how much you should believe.

小题1:What’s Verity’s opinion about colours?

A．Colours help people choose products.

B．Different people prefer different colours.

C．Colours have influences on people in many ways.

D．People working in colour industry know little about colours.小题2:What can you infer from Paragraph 2?

A．Colours influence people’s feelings and opinions.

B．People get ideas for new products from colours.

C．New products are popular because of colours.

D．Most companies prefer bright colours.小题3:The underlined part “goes out of her way” probably means ______.

A．feels very pleased

B．makes a special effort

C．goes on in her own way

D．carries on very slowly小题4: What’s the passage mainly about?

A．How people use colours.

B．How colours influence people.

C．What happens in a programme.

D．What makes a programme believable.

通过危险物质及其临界值标准，可以确定哪些是可能发生事故的( )。

A．重大危险源

B．外漏的危险源

C．多发性危险源

D．潜在危险源

经皮肾动脉腔内成形术简称（）

A.PTC

B.PTRA

C.PTCA

D.PCN

E.PTA

甲去朋友乙家做客，不慎将手机遗忘在乙家，乙发现后没有通知甲，而是自用，一周后该手机丢失，后来甲得知此事，要求乙返还手机。乙称自己是替甲保管手机，不愿意赔偿。以下说法正确的是( )。

A．甲无权要求赔偿，因为乙是无因管理

B．甲无权要求赔偿，因为乙是善意占有人

C．甲有权要求赔偿，因为乙是恶意占有人

D．甲有权要求赔偿，赔偿的数额为手机的价值减去乙的保管费用

Electronic mail has become an extremely important and popular means of communication.

The convenience and efficiency of electronic mail are threatened by the extremely rapid growth in the volume of unsolicited commercial electronic mail. Unsolicited commercial electronic mail is currently estimated to account for over half of all electronic mall traffic, up from an estimated 7 percent in 2001, and the volume continues to rise. Most of these messages are fraudulent or deceptive in one or more respects.

The receipt of unsolicited commercial electronic mail may result in costs to recipients who cannot refuse to accept such mail and who incur costs for the storage of such mail, or for the time spent accessing, reviewing, and discarding such mail, or for both. The receipt of a large number of unwanted messages also decreases the convenience of electronic mall and creates a risk that wanted electronic mail messages, both commercial and noncommercial, will be lost, overlooked, or discarded amidst the larger volume of unwanted messages, thus reducing the reliability and usefulness of electronic mail to the recipient. Some commercial electronic mail contains material that many recipients may consider vulgar or pornographic in nature.

The growth in unsolicited commercial electronic mail imposes significant monetary costs on providers of Internet access services, businesses, and educational and nonprofit institutions that carry and receive such mail, as there is a finite volume of mail that such providers, businesses, and institutions can handle without further investment in infrastructure. Many senders of unsolicited commercial electronic mail purposefully disguise the source of such mall.

Many senders of unsolicited commercial electronic mall purposefully include misleading information in the messages’ subject lines in order to induce the recipients to view the messages. While some senders of commercial electronic mail messages provide simple and reliable ways for recipients to reject (or ’opt-out’ of) receipt of commercial electronic mall from such senders in the future, other senders provide no such ’opt-out’ mechanism, or refuse to honor the requests of recipients not to receive electronic mail from such senders in the future, or both.

Many senders of bulk unsolicited commercial electronic mail use computer programs to gather large numbers of electronic mail addresses on an automated basis from Internet websites or online services where users must post their addresses in order to make full use of the website or service.

The problems associated with the rapid growth and abuse of unsolicited commercial electronic mall cannot be solved by the government alone. The development and adoption of techno-logical approaches and the pursuit of cooperative efforts with other countries will be necessary as well.

What does unwanted e-mail messages do to the providers of the Internet services().

A. Raising their cost.

B. Raising the Internet speed.

C. Improving their business.

D. Attracting investment.