问题 判断题

安康羊是由普通绵羊基因突变产生的(  )

答案

题目分析:变异是指亲代间和子代个体间的差异,根据变异是否可以遗传,分为可遗传变异和不可遗传变异,由遗传物质改变引起的变异,能够遗传给后代的属于可遗传的变异,仅由环境因素引起的,遗传物质没有发生改变,也不能够遗传给后代的变异属于不可遗传的变异,安康羊是普通绵羊由于基因突变而发生的变异类型,属于可遗传的变异,因此是可以遗传给后代的,故题干的叙述是正确的。

阅读理解

Girls in Japan love the month of March. March the third is Japanese Girls' Day, or people also call it the Doll(洋娃娃) Festival.

On this day, girls wear beautiful kimonos (和服). Their parents put lovely dolls on a shelf. They hope that the dolls can bring health and happiness to their girls. There are seven tiers (层) of dolls. Dolls of the king and queen are always at the top of the shelf.

Girls usually invite good friends to their homes on this day to celebrate(庆祝)it. They sit around the dolls, singing, dancing and talking. The next day parents have to put the dolls away quickly. According to Japanese tradition, if they don't do that, they may find it hard to marry off (嫁出) their daughters later in life.

小题1:When is the Doll Festival?

A.February 3rd.

B.March 3rd.

C.March 2nd.

D.May 3rd.小题2:What do girls wear on that day?

A.They wear short skirts.

B.They wear new T-shirts.

C.They wear school clothes.

D.They wear traditional (传统) Japanese clothes.小题3:What is on the top of the shelf?

A.Dolls of the king and queen.

B.Dolls of the parents.

C.Dolls of their daughters.

D.Dolls of the girls' friends.小题4:Why do parents put dolls on the shelf?

A.Because the dolls are very lovely.

B.Because their daughters ask them to do it.

C.Because the king and the queen want them to do it.

D.Because dolls can bring health and happiness to their daughters.小题5:Which of the sentences is NOT true?

A.The girls sing and dance around the dolls on that day.

B.The girls invite their friends to celebrate the festival together.

C.The shelf has seven tiers of dolls on it.

D.On March 3rd, parents should put the dolls away quickly.

填空题