北京观光客自然都会游览故宫和长城，这是因为故宫和长城是举世闻名的旅游景点。而 今天我却想向各

听力原文： Earthquakes often happen near volcanoes, but this is not always true. The centers of some are【L1】______. The bottom of the sea suddenly【L2】______. The powerful forces inside the【L3】______break the rocks. The coast is shaken and great waves appear. These waves travel【L4】______and rush over the land when they reach it. They are strong enough to【L5】______houses and other buildings; sometimes they break【L6】______than the earthquake itself. Very often fires followed the【L7】______earthquakes. In 1906, the great earthquake at San Francisco broke the gas-pipes. The gas【L8】______, and soon large numbers of fires were burning in the city. The water-pipes were also【L9】______; so it was not possible to put the fires out. There was【L10】______. The Tokyo earthquake of【L11】______happened just before the middle of the day. People were【L12】______on their fires at that time. When the ground shook, the fires shook too.【L13】______were thrown on the different parts of the houses, some of which were【L14】______. Soon 134 fires were burning in the city. What kind of building【L15】______in an earthquake? A building with concrete walls is perhaps the best. A【L16】______will make it even stronger. The frame. holds the【L17】______together, and the walls do not easily fall. There is【L18】______of fire because concrete and steel do not burn. The Americans【L19】______the results of the earthquake in San Francisco, and they are convinced that this kind of building is the【L20】______.

The centers of some are【L1】______.

onal debate over the future of human cloning has shifted to the states. Six states have already banned cloning in one form. or another, and this year alone 38 anticloning measures were introduced in 22 states.

The resulting patchwork of laws, people on all sides of the issue say, complicates a nationwide picture already clouded by scientific and ethical questions over whether and how to restrict cloning or to ban it altogether.

Since 1997, when scientists announced the birth of Dolly the sheep, the first cloned mammal, the specter of cloned babies, infants that are in essence genetic carbon copies of adults, has loomed large in the public psyche and in the minds of lawmakers.

Today, there is widespread agreement that cloning for reproduction is unsafe and should be banned. Now, the debate has shifted away from the ethics of baby-making and toward the morality of cloning embryos for their cells and tissues, which might be used to treat diseases. The controversy pits religious conservatives and abortion opponents, who regard embryos as nascent human life, against patients groups, scientists and the biotechnology industry.

y as in the tension between the idealized expectation in the culture and the reality itself. Nostalgia for a lost family tradition, which, in fact, never existed, has prejudiced our understanding of the conditions of families in contemporary society. Thus, the current .anxiety over the fate of the family reflects not only problems in the family but also a variety of fears about other social problems that are eventually projected onto the family.

The real problem facing American families today are not symptoms of breakdown as is often suggested; rather, they reflect the difficulties of adaptation to recent social changes, particularly to the loss of diversity in household membership, to the reduction of the variety of family functions and, to some extent, to the weakening of the family adaptability. The idealization of the family as a refuge from the world and the myth that the work of mothers is harmful has added considerable strain. The continuous emphasis on the family as a universal private retreat and as an emotional haven is misguided in light of historical experience.

的改革，使之逐渐走向竞争;并受到诸如关税、汇率和利率等法律和经济手段的制约。所有这些都应有助于加速中国外贸的国际化进程，为宏观经贸局面的形成创造一个较好的环境，通过促进商贸业、制造业、农业、技术产业和银行之间更为密切的合作，我们能够为国际市场提供更多、更好的出口产品。在这种情况下，中国自然会成为一个大市场。