题干

“假说一演绎法”是现代科学研究中常用的方法.孟德尔利用该方法发现了两大遗传定律.下列对孟德尔的研究过程的分析中,正确的是(  )

A:孟德尔的杂交实验,F1的表现型否定了融合遗传,证实了基因的分离定律

B:孟德尔对分离现象所作的假设的核心内容有:生物的性状是由遗传因子决定的,而且遗传因子在体细胞中是成对存在的,形成配子时成对的遗传因子分离

C:孟德尔发现的遗传规律同样适用于对细菌等原核生物的研究

D:孟德尔将数学的方法引入对遗传实验结果的处理和分析,合理地解释了分离和自由组合现象

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答案(点此获取答案解析)

B

同类题2

                                                                                                   谁建立了成功的标准
        上帝听说世间鼎盛,人人都前所未有地崇尚成功,心下窃喜,决定去探听虚实。他召集来若干凡人,问:“你们认为什么是成功?”
   张三说:“成功就是像大款那样有闲有钱。”
   李四答:“成功就是像明星那样有型有款。”
   王老五喊:“成功就是像名人那样有头有脸。”
  上帝摇头,禁止他们用“像某某一样”句型,众人面面相qù,不明所以。
  上帝索性问:“成功的标准是谁给的?”
  大家小声嘀咕:“管他是谁,反正不是我!”
  上帝不甘心,决心继续考察。
  他先是变成了一个有钱人,在花园里,他远远地望见一个年轻女人正在微笑地注视着在不远处玩耍的孩子和老人,他走上去,说:“我是有钱人,你认为我和你谁更成功?”
  女人笑了,回答:“我是孩子的好母亲,父母的好女儿,丈夫的好妻子,单位的好员工,社会的好公民,而你只是有钱人,你说谁更成功?”
  “有钱人”继续问:“成功的标准难道不是我们这些有钱人给的吗?”
  女人说:“那上帝造我们这些人出来是干什么的呢?”
  上帝满意地走了。
  他接着变成了一个明星,在路边,他远远地望见一个中年男子正在悠闲地蹬着自行车,他迎上去,说:“我是明星,你认为我和你谁更成功?”
  男人乐了,回答:“我活得坦荡而自由,而你只是个连结没结婚都不敢承认的明星,你说谁更成功?”
  “明星”继续问:“成功的标准不是我们这些明星给的吗?”
  男人说:“那这世界岂不是像娱乐圈一样无聊?”
  上帝满意地走了。
  他最后变成了一个名人,在稻田里,他远远地望见一个老农在种地,他走上去,说:“我是名人,你认为我和你谁更成功?”
  老农擦了把汗,想了想,回答:“俺不知道什么是成功,俺只知道俺把四个娃都供着念书成人。”
  “名人”继续问:“成功的标准不是我们这些名人给的吗?”
  老农说:“俺供俺娃读书的快活可不是你给的。”
  如此说来——上帝形而上学地想:成功只是一种审美情趣?他带着疑问去找马克思,马克思说:“上帝先生,美,就是人自身本质力量的对象化。”
  “什么意思?通俗点。”
  “一个人通过自己的行动和努力,感受到了自己的力量,看到了自己的内心,就会获得美的愉悦。”
  上帝明白了——成功也是一样。

同类题4

阅读理解

    The story of the movie Inside Out mostly takes place inside the mind of 11-year-old Riley as she moves from Minnesota to San Francisco. The main characters are Riley's emotions---Joy, Sadness, Disgust, Anger and Fear, which guide her decisions and often compete with one another for control of her brain.

    Fear is tall, thin, looks like a frayed(焦燥的)nerve and is purple. Not only that, his eyes are purple, too. Anger, which is red, looks like a brick and has red eyes. Disgust, who is green, has green eyes. Sadness, not surprisingly, is completely blue, and even looks like a teardrop. But Joy, who is mainly yellow, has more than one color in her. She has blue eyes and blue hair. Why? Well, if blue represents sadness, then the message is clear: there is no such ting as “pure joy”. Instead, even in our most joyous times, there is often sadness mixed in.

    After all, one of the most joyous moments we can experience is a wedding, but it may end with the breaking of a glass. It reminds us that our world is still broken. In order words, even at our highest moments, there is always a little sadness.

    But the comfort is that the reverse is often true. Think about how you feel after crying. When you cry, your body is releasing some chemicals that often make you feel good. And that's why you feel at ease after a good cry.

    Indeed, Inside Out reminds us that even the emotions that appear “negative' have value. In other words, Inside Out shows us that the goal of life isn't “to be happy”. We will feel sad, angry or frightened. But we need our whole range of emotions for developing our sense of self and our relationship with others.