人的眼球虹膜的颜色有多种,在欧洲蓝色眼睛的人较多,在进行眼色调查时,有以下几组数

题型:填空题

问题:

人的眼球虹膜的颜色有多种,在欧洲蓝色眼睛的人较多,在进行眼色调查时,有以下几组数据。请根据调查数据回答:

(1)控制褐眼的基因是____性,控制蓝眼的基因是____性,此判断是根据第____组婚配结果得出的。  

(2)若眼色基因用A、a表示,写出三组婚配方式的基因组成:①____、②____、③____。  

(3)第③组的子女中基因组成为Aa的个体理论上讲应当有____个。

考点:基因型与表现型基因控制生物的性状
题型:填空题

船只在海上发生事故后,饮用水缺乏常常是幸存者面临的首要问题。海水不可以饮用的原因是()。

A.海水中含有大量电解质,与人体的电解质构成有很大差异,海水进入人体后会造成人体电解质紊乱,甚至造成死亡

B.海水中含有大量电解质,渗透压远远大于人体细胞内液,海水进入人体后会造成人体细胞脱水,甚至造成死亡

C.海水中含有大量电解质,某些电解质对于人体而言是有毒的,海水进入人体后会造成中毒,甚至造成死亡

D.海水中含有大量电解质,味道又咸又涩,难以下咽

题型:填空题

(一)(本大题共2小题,每小题6分,共12分)著名哲学家黑格尔当年从神学院毕业的时候,他的老师给他写过一则评语:“黑格尔,健康状态不佳。中等身材,不善辞令,沉默寡言。天赋高,判断力健全,记忆力强。文字通畅,作风正派,有时不太用功,神学有成绩,虽然尝试讲道不无热情,但看来不是一个优秀的卫道士。语言知识丰富,哲学上十分努力。”

你认为应该怎样给学生写评语( )[不定项选择题]

A.写给学生看

B.写给“这个人”

C.体现一定的“教育性”

D.鼓励学生

题型:填空题

阅读理解。

     People need to relax and enjoy themse1ves.One way they can have a good time is to

watch a baseball game or another sports event.Even thousands of years ago,groups

of people gathered to watch skilled athletes(运动员).

      Over 2000 years ago in Greece,certain days in the year were festival days.These

were holidays when people stopped work and enjoyed themselves.They liked to watch

athletes take part in  races and other games of skill.

     The most important festival was held every four years at the town of Olympia.It was

held in honor of the Greek  god Zeus(Zus).For five days,athletes from all parts of the 

 Greek  world took part in the Olympic Games.At the Olympic Games,people could

watch them box,run,jump and so on.There was a relay race between two teams of

men in which a lighted torch(火矩)was passed from runner to runner.The Olympic

Games were thought to be so important that cities which were at war with one another had

to stop fighting.People were allowed to travel to the games safely.Thousands of people

came to Olympia from cities in Greece and from her colonies(殖民地)in Africa,Asia

and Italy.They met as friends to cheer their favorite athletes and to enjoy themselves.

 1.What happened in Greece over 2000 years ago?______

A.People stopped work and enjoyed themselves.

B.The cities there were often against one another.

C.People watched baseball games.

D.People didn’t go to any games at all.

 2.What were those countries in Africa?_____

A.Friends.    

B.Enemies.

C.Colonies.    

D.Other cities.

3.What did people do at the games?______

A.They fought.       

B.They just talked to friends.

C.They cheered for good athletes.  

D.They tried to find friends.

4.Greek cities then were fighting so they_____.

A.were weak                  

B.were strong

C.couldn’t go to other cities freely  

D.could see each other

5.The best title for the story is“_____”.

A.Greece at War      

B.Together for the Games

C.Stop Fighting            

D.Sport

题型:填空题

根据《公司法》的规定,有限责任公司监事会应当包括股东代表和适当比例的公司职工代表,其中职工代表的比例不得低于______,具体比例由公司章程规定。

A.1/5
B.1/4
C.1/3 D.1/2

题型:填空题

生产中常用的标准件有()。

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