先天性心脏病X线检查，有肺缺血性改变的是（） A.房间隔缺损 B.室间隔缺损 C.动

新生儿易患呼吸道和肠道感染是由于|

A.低IgA

B.低IgD

C.低IgE

D.低IgG

E.低IgM

They like using the Internet. They have lots of pocket money to spend. And they spend a higher proportion of it online than the rest of us. Teenagers are just the sort of people an online seller is interested in, and the things they want to buy－games, CDs and clothing－are easily sold on the Web.

But paying online is a tricky business for consumers who are too young to own credit cards. Most have to use a parent’s card. They want a facility that allows them to spend money.

That may come sooner than they think: new ways to take pocket money into cyber (网络的) space are coming out rapidly on both sides of the Atlantic. If successful, these products can stimulate online sales.

In general, teenagers spend huge amounts: $153bn (billion) in the US last year and ￡20bn annually in the UK. Most teenagers have access to the Internet at home or at school－88 percent in the US, 69 percent in the UK. According to the Jupiter Research, one in eight of those with Internet access has bought something online－mainly CDs and books.

In most cases, parents pay for these purchases with credit cards, an arrangement that is often unsatisfactory for them and their children. Pressing parents to spend online is less productive than pressing on the high street. They are more likely to ask “Why?” if you ask to spend some money online.

One way to help teenagers change notes and coins into cybercash is through prepaid cards such as InternetCash in the US and Smart cards in the UK. Similar to those for pay-as-you-go mobile telephones, they are sold in amounts such as￡20 or $50 with a concealed 14-digit number that can be used to load the cash into an online account.

小题1: What does the word “They” in paragraph 1 refer to?

A．Sellers.

B．Buyers.

C．Teenagers.

D．Parents.小题2:According to the passage, which of the following statements is TRUE?

A．More than half of the teenagers in the US and the UK have Internet access.

B．Teenagers pay for goods online with their own credit cards.

C．Most teenagers in the US and the UK have bought something online.

D．Teenagers found it easier to persuade parents to buy online than in a shop.小题3:New way to help teenagers shop online is to use ______.

A．a new machine

B．special coins and notes

C．prepaid cards

D．pay-as-you-go mobile phones小题4:What is the passage mainly about?

A．Online shopping traps.

B．Internet users in the US and the UK.

C．New credit cards for parents.

D．The arrival of cyber pocket money.

患者呼吸急促，喉中哮鸣有声，胸膈满闷如窒，咳不甚，痰少咳吐不爽，白色黏痰，口不渴，天冷或遇寒而发，形寒怕冷，伴有恶寒，喷嚏，流涕等表寒证，舌苔白滑，脉浮紧。其代表方剂是

A．大青龙汤

B．定喘汤

C．射干麻黄汤

D．三子养亲汤

自古以来，石城县是客家先民进入闽西、粤东的主道，素有什么之称？

关于妊娠期糖尿病妇女的护理，正确的是( )。

A．适当运动可提高机体对胰岛素的敏感性

B．尿糖是诊断糖尿病的主要依据

C．治疗糖尿病应首选饮食治疗

D．血糖可作为日常监测的观察指标

E．妊娠晚期可根据尿糖或酮体监测病情变化