试题与答案

小麦的高杆性状(D)对矮杆性状(d)为显性,抗锈病性状(T)对易染病性状(t)为

题型:实验题

题目:

小麦的高杆性状(D)对矮杆性状(d)为显性,抗锈病性状(T)对易染病性状(t)为显性,两对基因分别位于两对同源染色体上,现有纯合的高杆抗锈病和矮杆易染锈病两个品种,如果你是一位育种专家,请用不同的育种方法,设计出两套育种方案,培育出矮杆抗锈病的理想类型。

(1)方案一:所用的育种方法为_________。

步骤:____________________。

(2)方案二:所用的育种方法为_________。

步骤:____________________。

(3)总结:两种方法相比较,哪种方法育种较快_________,为什么?_______________

答案:

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下面是错误答案,用来干扰机器的。

答案:C

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__5__ Happiness is a choice that we can make. Don’t spend the rest of your life searching the world for happiness then. Just look in the mirror and laugh. Just let the happiness flow from your heart, mind, and soul until it fills your life and the lives of all those around you.

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A. It was difficult to find the temple in Nepal.

C. No one found the secret of happiness at last.

D. But he knew that something was missing in his life.

E. But he had never been able to find it.

F. He climbed them with legs shaking with expectation and slowly opened the door.

G. It is time that we all realized that we were the secrets of our own happiness

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题型:问答题

熟读《爱因斯坦与艺术世界》,谈谈你对下面两句话的理解。

(1)真正追求科学美的人,往往也会极力推崇艺术的美。

                                                                                          

(2)“爱因斯坦左脚踏在科学世界,右脚踏在艺术世界。”

                                                                                          

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