试题与答案

为观察生态系统稳定性,设计4个密闭、透明的生态缸,各缸内的组成和条件见下表。经过一段

题型:填空题 案例分析题

题目:

为观察生态系统稳定性,设计4个密闭、透明的生态缸,各缸内的组成和条件见下表。经过一段时间的培养和观测后,发现甲缸是最稳定的生态系统。

请回答以下问题。

根据观测结果,得出结论:

①();

②()。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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题型:阅读理解

Directions: Read the following Passage. Complete the diagram by using the in formation from the passage.

Write NO MORE THAN THREE WORDS for each answer.

     Detroit is convinced that small, stylish, and fuel-efficient cars are what American drivers want. But are

automakers right?

     For years, the auto industry's critics have been calling for Detroit to roll out small cars that they say

Americans are demanding for. The question is, do we really want to drive small cars? The answer, according

to some analysts, is already clear. "Domestic auto companies feel forced to offer smaller vehicles because of

pressure from the government." says John Wolconowicz, an auto analyst for IHS Global Insight.

     Whether we want the vehicles or not, automakers are devoted to a small-car sales strategy. General Motors

is unveiling (推出) three new small cars-the Chevrolet Cruze, a small car due next year; the Spark, a minicar

due in 2011; and the Chevy Aveo, a compact. Mike DiGiovanni, executive director of the global market notes

that GM is presuming a return to high oil prices that will cause the market to shift to smaller vehicles.

     At Ford, there are no plans to abandon production of big trucks. But the company is making small cars a

priority, launching the Ford Fiesta and the C-MAX, a compact car with sliding doors and three rows of seats,

in 2011. "We can't even think about growing our market share without having a strong pressure in the small-

vehicle market" George Pipas, Ford's chief U.S. sales analyst says.

     Not everyone is so big on Americans going small. This seems to be evident on dealer lots (停车场). Jack

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continue to outsell small cars, at least in his area "People won't give up the safety and comfort of the larger

cars," he says.

     But Ford's Pipas is confident that many will embrace the industry's new focus. Detroit's big hopes, he

admits, are riding on the future of small cars.

                                                        Title: Big Hopes on 1.________

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