题干

孟德尔的豌豆杂交试验,提出遗传定律;萨顿研究蝗虫的减数分裂,提出假说“基因在染色体上”;摩尔根进行果蝇杂交试验,证明基因位于染色体上。以上科学发现的研究方法依次是                                      (   )

A:类比推理法、类比推理法、假说——演绎法

B:假说——演绎法、类比推理法、类比推理法

C:假说——演绎法、类比推理法、假说——演绎法

D:类比推理法、假说——演绎法、类比推理法

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答案(点此获取答案解析)

C

同类题1

十月革命的胜利开创了社会主义现代化的新模式。阅读材料,回答问题。

材料一:克伦斯基政府(资产阶级临时政府)倒台了,新政权立即就要提出正义的和平,把土地交给农民。各地的政权都已转到工人、士兵和农民代表苏维埃的手里。

    ——据彼得格勒革命军事委员会关于推翻临时政府经过的通告(1917年11月7日)

材料二:1921年3月,布尔什维克第四次代表大会通过一个决议。该决议主要提到七点:国有工业仍为国民经济之基础;小工业及手工业应得到充分发展;可以自由出卖其制品及承受定购;苏维埃全力支持人民之日常需要品的生产;自由贸易;废除粮食法定价格,实行市场价格;企业可以出租给私人或外资。

                                               ——据1921年列宁《论粮食税》

材料三:在世界历史上,还没有任何一个国家如此全面细致地规划自己的发展进程。这是苏联人的一个创造。在那个时代,所有的生产、运输、销售都由国家计划安排。国家计划力争精确,在列宁格勒生产的一粒钮扣售价1卢布,那么700公里外莫斯科的价格也是1卢布,而万里之外的海参崴仍然是1卢布。

                                                  ——据《大国崛起》解说词

同类题5

阅读理解

    Having experienced a shocking electrical accident, which caused him to become both blind and deaf, James Franco's world became completely dark and quiet for almost ten years. The loss of sight and hearing threw him into such sorrow that he tried a few times to put an end to his life. His family, especially his wife, did their best to tend and comfort him and finally he regained the will to live.

    One hot summer afternoon, he was taking a walk with a stick near his house when a thunderstorm started all at once. He stood under a large tree to avoid getting wet, but he was struck by lightning. Witnesses (目击者) thought he was dead but he woke up 20 minutes later, lying face down in muddy water. He was trembling badly, but when he opened his eyes, he could hardly believe what he saw: a tree and a muddy road. When Mrs. Franco came running up to him, shouting to their neighbors to call for help, he could see her and hear her voice for the first time in nearly ten years.

    The news of James regaining his sight and hearing quickly spread and many doctors came to examine him. Most of them said that he regained his sight and hearing from the shock he got from lightning. However, none of them could give a compelling answer as to why this should happen. The only reasonable explanation given by one doctor was that, since James lost his sight and hearing as a result of a sudden shock, perhaps, the only way for him to regain them was by another sudden shock.