题干

研究和学习化学,有许多方法.下列方法中所举例错误的是(  )

选项

方法

示例

A

实验法

用浓氨水、酚酞溶液做“分子运动现象”实验

B

分类法

根据原子的最外层电子数,将元素分为金属元素、非金属元素、稀有气体元素

C

归纳法

根据木炭、硫等物质能在氧气中燃烧,归纳出氧气具有助燃性

D

类比法

根据镁带能在空气中燃烧,推测铁丝也能在空气中燃烧

A:A

B:B

C:C

D:D

上一题 下一题 0.0难度 选择题 更新时间:2015-02-05 09:49:51

答案(点此获取答案解析)

D

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Dear Dad,
   Happy birthday to you !
   On this special day I'd like to talk to you1a special way.
   I don't think I am good at2you my thought face to face with you,so I'm writing to show my deep love for you.You're not a rich man or a famous person.But in my heart,you are one of the greatest3 in the world.I am4 you.
   You are5 interested in fame and wealth.You do6 things like paying phone bills on time,and working as a worker in your factory.The smile on your face shows you are pleased with the family.You take good care of my grandparents.You help me with my schoolwork and do some shopping with Mom on Sundays.
   In the past,I didn't care7 you were with me or not.Now I am sorry to say I8 you the respect before.But I am thankful for what you have done for me. I am quite lucky that I have9 a great father.And I feel happy that now I can let you10 how much I love you.You are successful as a son,a husband,a father,and a friend.
   Wish you happy forever!
                                                                                                                                               Yours,

                                                                                                                                               David