题干

下列关于生物科学研究方法的叙述,错误的是(  )

A:采用对比实验的方法探究酵母菌细胞呼吸的方式

B:摩尔根采用假说﹣演绎法证明了基因位于染色体上

C:记名计算法是按预先确定的多度等级来估计单位面积上个体数量的多少

D:采用模型建构的方法能够帮助我们认识人体内对血糖水平进行调节的机制

上一题 下一题 0.0难度 选择题 更新时间:2018-03-25 05:02:58

答案(点此获取答案解析)

C

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根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,并在答题卡上将该项涂黑。选项中有两项为多余选项。

        Since the day of its birth, the United Nations has been the subject of much debate.

____ Others think that it is too weak. We can better understand this debate if we learn more about the U.N. and its history.

        The U.N. was started for two reasons. First, when the idea wasborn, people all over the world were tired of war. They felt that there must be peaceful answers to the world's problems.

____

        The second reason was that modern science had developed newbombs and airplanes.

____ National borders were beginning to lose theirmeaning. Science would develop even more dangerous weapons in the future. Onlyan international organization would be able to control modern science.

        Franklin D. Roosevelt, U.S. President at the time, believed thatthe Allies (联盟) should plan for peace before the war ended. On December 1, 1943, Roosevelt, Britain's Winston Churchill and Joseph Stalin from Soviet Union agreed to start anorganization for world peace.

____

        During the next year and a half, the idea of such anorganisation was debated around the world. Then came the big day. On April 11,1945, the first international meeting of the United Nations took place in SanFrancisco. The goal of the meeting was to write the U.N. Charter (宪章). All of thefifty-one nations at the meeting had their own ideas to offer for the Charter.

____ Every nation present voted for the Charter. Noone voted against it.

A. The U.N. Charter is a beautiful piece of writing.

B. After a long debate, a final Charter was agreed upon.

C. Even the smallest country on earth can have its voice heard.

D. They asked all countries, large and small, to join theorganization.

E. These weapons made it almost impossible for a country todefend itself.

F. Some people attack the organization because they think it istoo powerful.

G. They also felt that only an international organization couldkeep world peace.