题目内容
The word "quake-proof"(paragraph 6) might mean.
查看答案
搜索结果不匹配？点我反馈
更多问题
The author suggests making severe regulations to prevent oil tankers from dumping oil into
A．An Indian village.B．A little town in Canada.C．A village facing the Gulf of the St. L
None of the methods worked out two decades ago can give a uniform. warning before the quakes, let alone discover any sign that would tell whether the coming earthquake is mild or a killer. Earthquake formation can be triggered by many factors, says Hiroo Kanamori, an expert at the California Institute of Technology. So, finding one all-purpose warning sign is impossible. One reason is that earthquakes start deep in the earth, so scientists can't study them directly. If a quake precursor were found, it would still be impossible to warn humans in advance of all dangerous quakes. Places like Japan and California are full of hundreds, if not thousands, of minor faults.
Prediction would be less important if scientists could easily build structures to withstand tremors. While the science has improved dramatically in the past 10 to 15 years, every new quake reveals unexpected weakness in quake-resistant structures, says Terry Tullis, a geophysicist at Brown University.
In Kobe, for example, a highway that opened only last year was damaged. In the Northridge earthquake, on the other hand, well-built structures generally did not collapse.
A recent report in Science adds yet more anxiety about life on the faulty lines. Researchers ran computer simulations(模拟) to see how quake-resistant buildings would fall in a moderate-size earthquake, taking into account that much of a quake's energy travels in a large "pulse" of focused shaking. The results: both steel-frame. buildings and buildings that sit on insulating(隔离的) rubber pads suffered severe damage.
More research will help experts design stronger structures and possibly find quake precursors, but it is still a certainty that the next earthquake will prove once again that every fault cannot be monitored and every high way cannot be completely quake proof.
We can infer from the first paragraph that______.
Americans this year will swallow 15000 tons of aspirin(阿斯匹林), one of the safest and【B1】drugs【B2】by man, the most popular medicine in the world today. It is a pain【B3】. Its bad【B4】are relatively mild,【B5】it is cheap.
For millions of people suffering from arthritis(关节炎), it is the only thing that works. Aspirin,【B6】, is truly the 20th century wonder drug. It is also【B7】suicide drug and is the leading【B8】of poisoning among children. It has side effects that,【B9】relatively mild, are largely unrecognized【B10】users.
A small【B11】of aspirin(two five-grain tablets) relieves pain and inflammation(炎症). It also reduces fever by interfering【B12】some of the body's reactions. Specially, aspirin seems to【B13】the formation of the acids【B14】in pain and the complex chemical reactions that【B15】fever. The chemistry of these acids is not fully understood, but the slowing effect of aspirin is well-known.
Aspirin is very irritating to the stomach lining(内壁) and many aspiring takers complain【B16】upset stomach. There is a right way【B17】a wrong way to take aspirin. The best way is to chew the tablets【B18】swallowing them with water but【B19】people can【B20】the bitter taste. Some people suggest crushing the tablets in milk or orange juice and drinking that.
【B1】
微信支付 
支付宝支付