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问题 单项选择题

（）级检修是指根据设备的磨损、老化规律，有重点地对机组进行检查、评估、修理、清扫。

A、A

B、B

C、C

D、D

答案

参考答案：C

阅读理解
阅读理解
Dear Lena,
     My name is Wu Dong. I'm a Chinese boy. I live in Beijing now. I am a student in Grade Seven at a
middle school. I want a pen friend in England. I think England is an interesting place. I'm 14 years old. I
am tall and have blue eyes and fair hair. I like sports, especially playing football. I often play volleyball
with my friends after school. I think it's great fun. I also like playing computer games and playing the
piano, but I don't like watching TV. My favourite festival is Spring festival. My family get together at
our house on that day. We often get some presents from my parents.
     This month I got a bike because I got good marks(分数) in exams(考试) but I never ride it to school.
     Do you like to be my pen friend?
     Please write to me soon.
                                                                                                                       Yours truly,
                                                                                                                        Bob Black
Things about the writerHis name is Wu Dong. He (1)                     from China.
Needs (需求) of hisHe needs a pen (2)                    . Now, he is writing a (3)                     to Lena from England.
Appearance (外貌)He (4)                     blue eyes and fair (5)                    .
Activities (活动)(6)                     is his favourite activity and he enjoys playing volleyball with his friends (7)                     school. Spring festival is his favourite (8)                    . He is (9)                     to get the present from his (10)                    .
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填空题

（10分）SO3和SiO2均属于酸性氧化物，能溶于水的是_________，反应的化学方程式是___________________________；SiO2与氢氟酸（HF的水溶液）反应，常用于刻蚀玻璃，该反应的化学方程式是_________________________________。请写出Al2O3分别与盐酸、氢氧化钠溶液反应的离子方程式：____________________________，___________________________________，所以Al2O3属于______氧化物。
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