题干

在由Fe、FeO和Fe2O3组成的混合物中加入100 mL 2 mol / L的盐酸,恰好使混合物完全溶解,并放出448 mL气体(标准状况),此时溶液中无Fe3+ 离子。则下列判断正确的是                                                              (               )

A:混合物里三种物质反应时消耗盐酸的物质的量之比为1∶1∶3

B:反应后所得溶液中的Fe2+ 离子与Cl-离子的物质的量之比为2∶ 1

C:混合物里,FeO的物质的量无法确定,但Fe比Fe2O3的物质的量多

D:混合物里,Fe2O3的物质的量无法确定,但Fe比FeO的物质的量多

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C

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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