问题 选择题

读亚洲东部10月23日某时海平面等压线分布图,完成问题。

小题1:图中所画锋线错误的是

A.Ⅰ、Ⅲ

B.Ⅰ、Ⅱ

C.Ⅱ、Ⅲ

D.Ⅲ、Ⅳ小题2:引起此时我国北方与华南沿海均出现大风天气的天气系统,分别是

A.蒙古西伯利亚高压,印度低压

B.冷锋,强热带风暴

C.亚洲高压,暖锋

D.冷锋、亚洲低压小题3:下列示意图能正确反映Ⅲ附近a、b两地间的气压分布状况是

A                B                 C              D

答案

小题1:D

小题2:B

小题3:C

本题考查等压线天气图的综合判断。

小题1:图示Ⅲ、Ⅳ为高压脊,故不可能出现锋面。

小题2:结合图示我国北方受蒙古西伯利亚高压的前锋—冷锋影响而出现大风天气,而我国华南沿海受气旋影响,即热带风暴影响,而出现大风天气。

小题2:根据Ⅲ线穿过的两条等压线数值1020和1015,图判断图示Ⅲ为高压脊,故ab之间气压较高,而图示a更接近1010等压线,表示气压较低。

问答题 简答题
单项选择题

In November the European Parliament’s culture and education committee is due to move forward on its proposed "audiovisual media services" directive, before sending it to the full parliament in December. The new rules update and relax the "Television Without Frontiers" directive of 1989, which opened Europe’s national markets. But critics complain that they also seek to extend fusty regulations from the era of broadcast television to today’s very different technologies. Rules on advertising, the protection of children and so on could potentially also apply to all kinds of video streams, including video blogs, online games and mobile-video services.

This could have a chilling effect on innovation and risks stifling emerging technologies with rules designed for another age, says Chris Marsden of RAND Europe, a think-tank that has analysed the potential impact of the proposed rules for Ofcom, Britain’s media and telecoms regulator. "Regulators have to be thoughtful. They cannot predict the future of television "or the internet—no one can," says Niklas Zennstr. m, a co-founder of Skype, who is now setting up an internet television firm.

The proposed rules may be unrealistic as well as onerous. The idea that websites can be regulated like broadcasters, which are required to keep strict records of what they show in order to help watchdogs investigate complaints, is untenable. Firms could simply relocate outside the European Union to escape the new rules. Last week Ruth Hieronymi, a member of parliament, said she would introduce wording that might help to overcome some of the objections.

Behind the debate is the question of how best to balance competition and protection. Traditional broadcasters worry that they will be shackled by regulations while brisk start-ups can do as they please—so they like the idea of extending regulation to their new rivals. But even if the rules are approved as they stand, they will not come into force until 2010. Such a long, slow process seems incongruous given the pace of technological change.

Why Traditional broadcasters want to extend regulations to the new broadcasters()

A. Because they are chained by regulations while the new rivals are free from them

B. Because it is hard to balance competition and protection

C. Because the new broadcasters are more adapted to the regulations

D. Because the rules come into force in a slow and long process