芦花鸡的羽毛(成羽)是一种黑白相间的斑纹状,但在雏鸡阶段的绒羽为黑色且头顶上有一个黄

题型:单项选择题

问题:

芦花鸡的羽毛(成羽)是一种黑白相间的斑纹状,但在雏鸡阶段的绒羽为黑色且头顶上有一个黄色斑点。控制芦花的基因在Z染色体上,芦花对非芦花是显性。养鸡场为了多养产蛋母鸡,要大量淘汰公鸡,你建议如何配种来达到这个目的()

A.芦花母鸡×非芦花公鸡

B.芦花公鸡×非芦花母鸡

C.芦花母鸡×芦花公鸡

D.非芦花母鸡×非芦花公鸡

考点:高中生物伴性遗传伴性遗传题库
题型:单项选择题

阅读理解。

     "How are you?" is a nice question. It's a friendly way that people in the United States greet each other.

But "How are you?" is also a very unusual question. It's a question that often doesn't need an answer. The

person who asks "How are you?" hopes to hear the answer "Fine", even if the person's friend isn't fine.

The reason is that "How are you?" isn't really a question and"Fine" isn't really an answer. They are simply

other ways of saying "Hello" or "Hi".

     Sometimes, people also don't say exactly what they mean. For example, when someone asks "Do you

agree?" the other person might think, "No, I disagree. I think you're wrong…" But it isn't very polite to

disagree so strongly, so the other person might say "I'm not sure." It's a nicer way to say that you don't

agree with someone.

     People also don't say exactly what they are thinking when they finish talking with other people. For

example, many talks over the phone finish when one person says"I have to go now." Often, the person

who wants to hang up gives an excuse:"Someone's at the door." "Something is burning on the stove."

The excuses might be real, or not. Perhaps the person who wants to hang up simply doesn't want to talk

any more, but it isn't polite to say that. The excuse is more polite, and it doesn't hurt the other person.

     Whether they are greeting each other, talking about an idea, or finishing a talk, people don't say exactly

what they are thinking. It's an important way that people try to be nice to each other, and it's part of the

game of language.

1. When a person in the United States asks "How are you?", he or she wants to hear " _______". [ ]

A. How are you?

B. Hello.

C. I don't know.

D. Fine.

2. When a person disagrees with someone, it is polite to say "_______". [ ]

A. You're wrong. I disagree.

B. I'm not sure.

C. I'm sure I disagree.

D. No, I disagree.

3. A polite way to finish a talk is to say "_______". [ ]

A. You have to go now.

B. I want to hang up.

C. I have to go now.

D. I don't want to talk any more.

4. When a person says "I have to go now" "Someone's at the door", the person may be _______. [ ]

A. giving an excuse

B. hurting someone's feeling

C. ill in bed

D. asking you a question

5. What does the rule of the game of language probably mean? [ ]

A. Be polite.

B. Don't disagree with people.

C. Always say what you mean.

D. Never say exactly what you are thinking.

题型:单项选择题

男性,46岁,因股骨粉碎性骨折入院。入院时无肺部感染的临床表现,5天后出现肺部感染的症状和体征,该病人的情况属于()

A.医院感染

B.院外感染

C.院前现象

D.并发症

E.原发感染

题型:单项选择题

患者女性,50岁以舌烧灼样疼痛半年就诊。检查可见舌背厚白苔,两侧边缘近根部红肿,有粟粒状突起和垂直向较深的沟裂,咽充血,水肿,诊断应为()

A.沟纹舌

B.地图舌

C.舌叶状 * * 炎

D.舌菌状 * * 炎

E.舌轮廓 * * 炎

题型:单项选择题

纺织纤维有哪些基本性能?()

A.长度与细度

B.强度与伸长

C.摩擦与抱合

D.吸湿性能

题型:单项选择题

认为“人的早期对其未来的发展具有重大的影响”,把早期教育作为先行资助的项目之一的美国著名私人基金会是()。

A.沃克菲勒基金会

B.盖茨基金会

C.卡内齐基金会

D.福特基金会

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