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09考研英语阅读B节新题型逐个剖析(三)
的化石都是保存在由水作用形成的岩石里。这些化石里的动物大多数生活在水里或者靠近水的地区。因此，必然有许多我们还一无所知的动物、鸟类和昆虫生活在它左右。 43)已发现的遗留物中最早期的都是生活在海洋中的相当简单的物种。后来的形状更复杂，当中有海合，有着长手臂、由一根通向海底或岩石的长茎吸附的星鱼亲系。也有蟹类生物，它们的身体由角状物覆盖。身体部分每边有两对脚。一对是用来在沙底行走，另一对用来游泳。头是一种防护物，上面有一双复合眼，通常有成千上万个透镜。 44)甲壳类动物在岩石里有很长的历史，许多不同的种类已为人类所知。这当中，菊石是很有趣和重要的种类。它们有一个由许多小室组成的壳，每一个代表它临时的家。当一个年幼的菊石长大，它就自己生成一个新室而封存原先那个。在多西特海滩的岩石里可见到成千上万个这样的东西。 45)最初真正的脊椎动物是鱼，最早被发现的生活于三亿七千五百万年前。大约在三百百万年前，两栖动物即既能生活在陆地又能生活在水里的动物出现了。它们很大，有时有八英尺长。许多生活在沼泽地里，那里也是煤炭断层形成的地方。两栖动物滋生了爬虫动物。在近一百五十百万年里这些是生活在陆地海洋和空气里的生物的最初形式。 在约七十五百万年前，爬虫纪过去，许多种类灭绝。哺乳动物迅速发展，我们可以追溯出许多熟悉动物的进化轨迹如大象和马。许多后来的哺乳动物尽管现在已经灭绝，但却为原始人所知，这在他们的壁画和骨骼雕刻中可以发现。 (二)2005年真题解析 Directions: In the following text, some sentences have been removed. For Questions 4145, choose the most suitable one from the list AG to fit into each of the numbered blanks. There are two extra choices, which do not fit in any of the blanks. Mark your answers on ANSWER SHEET 1. (10 points) Canadas premiers (the leaders of provincial governments), if they have any breath left after complaining about Ottawa at their late July annual meeting, might spare a moment to do something, together, to reduce healthcare costs. Theyre all groaning about soaring health budgets, the fastestgrowing component of which are pharmaceutical costs. 41. What to do? Both the Romanow commission and the Kirby committee on health care—to say nothing of reports from other experts—recommended the creation of a national drug agency. Instead of each province having its own list of approved drugs, bureaucracy, procedures and limited bargaining power, all would pool resources, work with Ottawa, and create a national institution. 42. But “national”doesnt have to mean that. “National” could mean interprovincial—provinces combining efforts to create one body. Either way, one benefit of a “national” organization would be to negotiate better prices, if possible, with drug manufacturers. Instead of having one province—or a series of hospitals within a province—negotiate a price for a given drug on the provincial list, the national agency would negotiate on behalf of all provinces. Rather than, say, Quebec, negotiating on behalf of seven million people, the national agency would negotiate on behalf of 31 million people. Basic economics suggests the greater the pot 责任编辑:gaoyan 论坛精华
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