题干

下列实验操作中不正确的是(    )

A:不慎将浓碱液沾到皮肤上,要立即用大量水冲洗,然后涂上硼酸溶液

B:制备氢氧化铁胶体时,应向沸水中逐滴滴加1~2 mL饱和的FeC13溶液,并继续加热到液体呈透明的红褐色为止

C:分液时,分液漏斗下层液体从下口放出,上层液体从上口倒出

D:将固体加入容量瓶中溶解并稀释至刻度线,配制成一定物质的量浓度的溶液

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D

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  Dear Peter,

    Without knowing more about you,it's hard for me to give you some good advice.

    But firstly.I am sure that you are 1 .You said that nobody would care if you left  home.What about your2  ? And other family members ?It seems that you are very 3.You'd better go to a doctor or talk  4 your parents.They will be able to help you.

    Secondly,I'm sure there's someone else in your class who feels lonely,  5.You never know 6other people feel.Try to make friends with your classmates.And you could  7  a club to meet new people and make friends,too.

    You 8  find happiness in yourself.So my 9advice is to write a list of all the good things about yourself,learn to like yourself,and then  10  will see your confidence(信心)and like you,too. 

                                                                                                                                                                                                                   Yours,

                                                                                                                                                                                                                     Lily