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听力原文： A key component in the explosives used in last week' s London bombings is triacetone triperoxide (TATP), a U.S. law enforcement official tells U.S. News. TATP is a sophisticated or 'high yield' explosive that' s easily mixed at home with recipes available on the Internet.
It was used by suicide bombers in Israel and chosen as a detonator in 2001 by would-be shoe bomber Richard Reid. Reid, who attempted to bomb a plane as it crossed the Aflamic Ocean, has claimed he used an Internet recipe to make his sneaker bomb. The ingredients in TATP — hydrogen peroxide obtained from local pharmacies, the paint thinner acetone, and a little hydrochloric or sulphuric acid-- can be mixed to manufacture TATP, which packs the same punch as plastic explosives such as RDX. TATP, used by terrorists in the Middle East and elsewhere, is considered so unstable that it can be set off by clapping one' s hands to detonate it or stomping on it with one' s foot and usually is used with other ingredients as a booster or detonator component.
What is the feature of TATP?
A．It is an simple explosive.
B．It is a military explosive.
C．It is made in U.S. factories.
D．It can be easily made indoors.

A.S.
B.S.
C.
D.
What
E.It
F.
B．It
G.
C．It
H.S.
I.
D．It
J.

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The age of gilded youth (纨绔子弟) is over. Today' s under-thirties are the first generation for a century who can expect a lower living standard than their parents. Research into the lifestyle. and prospects of people born since 1970 shows that they are likely to face a lifetime of longer working hours, lower job security and higher taxes than the previous generation. When they leave work late in the evening they will be more likely to return to a small rented flat than to a house of their own. When eventually they retire, it will be on pensions far lower in real terms than those of their immediate forebears (祖先，祖宗). The findings are revealed in a study of the way the aging of Britain's population is affecting different generations. Anthea Tinker, professor of social gerontology at King's College London, who carried out much of the work, said the growth of the proportion of people over 50 had reversed the traditional flow of wealth from older to younger generations. 'Today's older middle-aged and elderly are becoming the new winners,' she said. 'They made relatively small contributions in tax but now make relatively big claims on the welfare system. Generations born in the last three to four decades face the prospect of handing over more than a third of their lifetime's earnings to care for them'. The surging(激增) number of older people, many living alone, has also increased demand for property and pushed up house prices. While previous generations found it easy to raise a mortgage (抵押), today's under-thirties have to live with their parents or rent. If they can afford to buy a home it is more likely to be a flat than a house. Laura Lenox-Conyngham, 28, grew up in a large house and her mother did not need to work. Unlike her wealthy parents, she graduated with student and postgraduate loan debts of ￡ 13, 000. She now earns about ￡ 20,000 a year, preparing food to be photographed for magazines. Her home is a one-bedroom flat in central London and she sublets the lounge sofa bed to her brother. 'My father took pity and paid off my student debts,' she said. 'But I still have no pension and no chance of buying a property for at least a couple of year—and then it will be something small in a bad area. My only hope is the traditional one of meeting a rich man.' Tinker's research reveals Lenox-Conyngham is representative of many young professionals, especially in London, Manchester, Edinburgh and Bristol.By saying 'the growth of the proportion of people over 50 had reversed the traditional flow of wealth from older to younger generations' (Lines 3 ～ 4, Para. 2), Anthea Tinker really means that ______.A．currently wealth flows from old generation to younger generationB．traditionally wealth flows from younger generation to old generationC．with the increasingly big population of over 50, the trend arises that wealth flows from younger generation to old generationD．with more and more people of over 50, traditions have been reversed

A.
B.
C.'
D.
By
E.
A．currently
F.traditionally
G.with
H.with

单项选择题

A．By calling them fools.B．By writing them jokes.C．By sending them ridiculous cards.D．By taping a paper fish to their friends' backs.

A.By
B.
B．By
C.
C．By
D.
D．By
E.