题干

某学校的研究性学习小组以“研究××遗传病的遗传方式”为课题进行调查研究,最好选择调查何种遗传病以及采用的方法是(  )

A:白化病;在周围熟悉的4~10个家系调查

B:苯丙酮尿症;在患者家系中调查

C:红绿色盲;在学校内随机抽样调查

D:原发性高血压;在患者家系中调查

上一题 下一题 0.0难度 选择题 更新时间:2012-02-20 09:23:49

答案(点此获取答案解析)

B

同类题2

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

How to Love Your Parents?

    You love your parents for the fact that they created you, raised you, and are in part, a source of who you are. ____.

    Respect them more and value these moments. You can use these moments to learn from them, preparing yourself for when you're off on your own. It's OK to get angry but angry actions don't help you or your parents. Act calmly, cool off, write down your feelings, or talk to a friend. ____.

    Obey their requests. It will make your attitude better and earn you more respect from them. It may seem like you are going through hell when you don't get what you want or you have to clean. However, you had better remember they keep a roof over your head when it's cold, raining, snowing, or too hot. Understand that parents are human beings and make mistakes. ____ Since you can forgive (原谅) your friends, why not forgive your parents?

    Keep company with them. Do things with your parents like watching TV, or going somewhere with them. ____ Listen to their old stories and learn from them. You will find they are your teachers in this way or another.

    Tell them you love them every morning.

    A gentle “good morning” and “I love you” will warm a coldest heart. ____ Without your parents, you cannot come to this world.

A. Forgiveness is the key.

B. Here are some ways to love your parents.

C. Parents will in turn express their love to you.

D. After this, share your feeling with your parents.

E. Anyway, spend as much time with them as you can.

F. Please remember parents are as important as friends.

G. Remember that they brought you into this world.