题目内容
某年某社区开展为期一年的糖尿病普查，该社区年初人口数9500人，年末人口数10500人。年初有糖尿病人100人，年末有糖尿病人130人，普查期间有10名患者死于糖尿病并发症。 该社区普查当年的病死率（）。
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本部分包括表达与理解两方面的内容。请根据题目要求。在四个选项中选出一个最恰当的答案。 请开始答题：阅读下列短文。回答下列问题。 目前生态学家谈论最多的话题是：温室效应将使地球气温急剧上升，造成南北极冰雪融化，沿海大片土地将被淹没。有人则认为CO2浓度增加导致气温上升使植物光合作用能力相应提高，可以促进农业的发展。再者，由于绿色植物反馈调节的影响，结果也绝不会那样严重。 学者们通过精密的实验对以上说法持有如下见解，他们说，按一般理论，大气中CO2的含量增加会促进光合作用，植物因此增长加快净化环境将是情理之中的事。但事实却是：在CO2富集的环境中，绿色植物光合作用的效率往往开始时有所增长，但不久就缓慢下降；而且即使光合作用随着CO2的增加而提高，植物生长也不一定加快。有的学者还担心，温室效应使得寒冷地区部分冻结的泥炭解冻后暴露给分解细菌，经细菌的作用而释放出的CO2数量十分可观，这样看来，还真有点“得不偿失”呢! 如果学者们的论证是无懈可击的话，那么，把环境保护的希望寄托于绿色植物的自净作用的认识______。 对文中划线的词语解释准确的是( )。
（38）是把对象的属性和服务结合成一个独立的系统单元，并尽可能隐藏对象的内部细节：（39）是指子类可以自动拥有父类的全部属性和服务；（40）是对象发出的服务请求，一般包含提供服务的对象标识、服务标识、输入信息和应答信息等。 （38）处填（）。
Question 41-44Saudi Arabia, OPEC’s cautious giant, understands all this. When Bill Clinton met Saudi Arabia’s Crown Prince Abdullah this week, Mr. Clinton argued for an output rise big enough to put an end to these painful prices. Prince Abdullah has promised to “make every effort to ensure equilibrium in the oil markets and to stabilise prices.” This week he revealed that Saudi Arabia has been quietly leaking an extra 600,000 barrels per day (bpd) on to the market since July in an effort to cool prices. .If that is true, it just goes to show that managing the oil markets is easier said than done. Despite several Saudi-inspired output increases by the cartel in recent months, the price has remained stubbornly high; this week, it soared to nearly $35 a barrel, the highest since theGulf war in 1990. As the cartel’s oil ministers gather in Vienna on September 10th to hammer out new production quotas, they are once again under intense pressure to release more oil, and fast. To hear OPEC members talk, you might think that serious price relief is on the way. There is discussion of “managing” prices down through a newish price mechanism. At the cartel’s meeting in March, ministers quietly agreed a grand new plan to keep oil within a target band of $22-28 a barrel. If the price of a basket of seven OPEC crudes stays below $22 for 20 trading days, the cartel is supposed to cut production by 500,000 barrels a 0ay. If it stays above $28 for 20 trading days, it will automatically raise production by the same amount. This price band has become the main topic of discussion in advance of the upcoming gathering of ministers. Prince Abdullah even talks of a return to a stable market within months. Oil traders and analysts note that the 20-day limit looks likely to be triggered again this week. A new report by Lehman Brothers, an investment bank, echoes the view of many: “Our expectation is that production will be increased by 500,000 bpd, either through the price mechanism or through a separate agreement.” When it released new figures suggesting that domestic oil-stock levels are lower than previously thought, the American government’s Energy Information Administration added that it too expects an increase of that size. Adding support to this theory are mumblings from OPEC delegates in support of the mechanism. Two decades ago, in the year of the cartel’s 20th birthday celeb rations, ministers gathered in Indonesia to hammer out details of a clever new scheme: a mechanism whereby the price of oil would be fixed, and adjusted every quarter automatically for such factors as inflation and currency fluctuations. Members had agreed on the ambitious plan, except for one crucial detail: at what price to start this price-peg crawling. The cautious Saudis, the self-proclaimed guardians of the oil market, wanted a price below $30 a barrel; the hawks in the cartel, unconcerned about consumers’ pain, demanded a much higher price. The ensuing bickering ensured that the scheme collapsed. History may now be repeating itself. When the current price-stabilization scheme was first unveiled, punters with short memories placed big bets that the cartel would adhere to it. By mid-June, the price basket had sailed past the 20-day upper trigger. But OPEC did not “automatically” release 500,000 barrels. Various confused and contradictory explanations surfaced from ministers, but not the oil. Only at their next officially scheduled meeting did they come up with a meager quota increase. How many oil price schemes were recommended by OPEC ministers according to the passage
为了在健康人群中发现可疑的乙性肝炎感染者宜用（）。
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