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问题 选择题

下列反应的离子方程式，正确的是 [ ]

A．向氯化铝溶液中加入过量氨水溶液：Al3++4OH- = AlO2-+2H2O

B．单质铜与稀硝酸反应：Cu+2H++2NO3- = Cu2++2NO↑+H2O

C．氯化铵溶液与氢氧化钠浓溶液混合并加热：

D．向硅酸钠溶液中滴加稀醋酸：SiO32-+2H+ = H2SiO3↓

答案

答案：C

阅读理解

I was quite close to my grandmother, Julia. We lived with her and then she lived with us. She was a very nice person, both kind and patient. She taught me to read and write when I was young and helped me to be interested in stories and poems.

In my mind, my grandmother was a great tailor. She made clothes or toys better than anything you can buy in a shop today. She always made clothes for family and friends.

My grandmother was also a hard worker both at home and at work. I can still remember the difficult time when we were very poor. At that time, my grandmother was already sixty years old but she worked in a hospital for a long time every day--not in the office but doing the cleaning outside and taking care of me at the same time while my mom was at work!

My brother and sisters also love her. We will never forget our grandmother. She is really important in our lives and is always there for all of us in one way or another. I am proud to be her grandson.

小题1:The writer's grandmother taught him to         when he was young.

A．read and write

B．sing and dance

C．draw and sing

D．play and learn小题2:His grandmother always made          for family and friends.

A．cakes

B．cards

C．meals

D．clothes小题3:While his mom was          , his grandmother took care of him.

A．at home

B．at work

C．out of work

D．in hospital小题4:At the age of 60, his grandmother         in a hospital for a long time every day.

A．made fine toys

B．worked in the office

C．did the cleaning

D．stayed with his mother
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单项选择题

以下2题共用答案

急性心肌炎时，心肌酶变化规律

A．6小时内开始升高，24小时达高峰，持续3～5天
B．8～12小时开始升高，18～36小时达高峰，持续3～5天
C．8～10小时开始升高，2～3天达高峰，持续8～14天
D．2～3小时开始升高，12小时达高峰，持续7～9天
E．升高，无演变规律
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