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简述国际区域经济一体化的形式。
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是不是有的人天生聪明，而有的人天生就愚笨呢还有，人的智力是由环境和经历造就的吗令人吃惊的是这两个问题的答案都是肯定的。在某种程度上，人的智力是天赋的。对一个先天弱智的儿童无论进行多少特殊教育也无法使其变为天才。另一方面，一个生活在枯燥单调环境中的孩子的智力发展往往不如生活在富有和丰富多彩环境中的孩子。由此可见，一个人的智力极限是与生俱来的，但他能否达到其智力极限则取决于环境。这个为当今绝大多数专家所赞同的观点可以从几个方面得到论证。
A4型题女，34岁，曾生育1子，并流产3次，近2年来痛经有日渐加重趋势。妇科检查；左侧附件可触及直径6cm的囊性包块，张力高，推之不动，有粘连感，追问病史，1年前肿块直径仅4cm。 若患者要求手术治疗，你认为下列那种治疗方案较好（）
假设用12个二进制位表示数据。它能表示的最大无符号整数为 (3) ；若采用原码，它能表示的最小负整数为 (4) 。
The devastating effects of earthquakes on human lives and property have encouraged the search for earthquake prediction. This challenge remains and contemporary seismologists continue to seek reliable methods for pinpointing the time, place and magnitude of individual quakes. One prediction technique involves an analysis of the recurrence rates of earthquakes as indicators of future seismic activity. Earthquakes are concentrated in certain areas of the world where tectonic plates such as the Pacific Plate, the Eurasian Plate and the African Plate meet and create fault zones and it is in these areas that seismologists focus their investigations. The tectonic plate model provides another tool for earthquake prediction by calculating the accumulated strain at plate boundaries. When the strain reaches a certain magnitude the pressure must be released and it is therefore hypothesized that in such eases an earthquake is imminent. The search for premonitory phenomena has received particular attention. In contrast to the ancient Greeks and Romans, who relied on the howling of dogs as a warning sign, modern seismologists have focused on physical evidence for an impending earthquake. Evidence of plate strain can be found by measuring relative movements in geodetic stations, while chemical changes also offer signals for seismologists. Using chemical-detection techniques, scientists established a link between the rise in the concentration of radon gas in mineral water and the subsequent earthquake. Analysis of the changes in magnetic properties and conductivity of rocks provides further data for prediction. The electrical and magnetic properties of crustal rocks particularly sensitive to strain and studies measuring changes which occur in these properties have provided promising results. The conductivity of crustal rock is determined by the degree to which the rock is saturated with fluid and the electrolytic properties of those fluids. Before large earthquakes, small fractures develop in rocks, which change the quantity of fluid present. These changes can be measured and provide useful predictive data. However, similar changes in the fluid-bearing capacity of rock can occur as a result of other factors such as changes in the water table, and therefore this technique is not entirely reliable. The belief that the behavior of birds, eats and dogs provides evidence of imminent earthquakes has recently gained credence. It is hypothesized that the animals are sensitive to the seismic waves which precede major quakes. In zones where earthquakes are known to occur, improved construction techniques can significantly reduce the effects of seismic waves. If more accurate information regarding the time and magnitude were available, governments could take even more effective measures to reduce the impact on human life. If an entirely accurate prediction technique became available, there would be significant social and political implications. An earthquake prediction in a major urban area would require governments to provide an effective evacuation strategy, necessitating massive resource and political will. Which of the following is not what scientists attempt to find out about earthquakes
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