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

问题:

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?_______________

考点:植物的组织培养技术杂交育种
题型:实验题

There once was a very wealthy and successful man. He had more money than he could ever spend, and he was admired and looked up to by his community. __1___ He wasn’t happy. All his life he had been looking for happiness and striving for happiness.___2____

Then one day he heard about a hidden temple in Nepal that had a special room that contained the secret of happiness.___3___ After many years of searching and countless hardships he arrived there. He was tired and penniless, but he knew that none of that mattered now because he had found the temple. He asked a wise, smiling monk if he could enter the special room. The monk agreed and showed him the stairs leading to the room. ___4___ He stared into the room with sunlight steaming through the window and saw what he had come so far to find. There hanging on the wall was the secret of happiness. The man gazed at his reflection in the mirror and laughed.

__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.

A. He immediately sold all that he owned and set out to find this hidden temple

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

题型:实验题

建筑物价格鉴证可比实例的成交日期与价格鉴证基准日应相近,若房地产市场价格相对比较稳定,可适当延长间隔时间,但最长不宜超过()个月。

A.18

B.24

C.30

D.36

题型:实验题

上题项下是检查注射液中的哪种特殊杂质

A.氯化物
B.硫酸盐
C.5-羟甲基糠醛
D.N-甲基葡萄糖胺
E.蛋白质

题型:实验题

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。”

                                                                                          

题型:实验题

有关鼻窦的开口组合,下列错误的是()

A.上颌窦-中鼻道筛漏斗半部

B.额窦-中鼻道额隐窝

C.前组筛窦-中鼻道筛泡处

D.后组筛窦-中鼻道后端

E.蝶窦-不易见到

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