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问题 选择题

下列各组物质中按酸、碱、盐、单质的顺序排列的是[ ]

A.H2SO4、Na2O、MgCl2、C

B.NaHCO3、Ba(OH)2、NaCl、Zn

C.HNO3、KOH、Na2CO3、O2

D.HCl、KOH、Na2CO3、SiO2

答案

答案：C

完形填空

短文填空（共10小题；每小题1分，满分10分）

根据短文内容及所给首字母提示写出所缺单词, 并将完整单词填在下面对应题号后的横线上。

Hello. I’m Tom. I’m a middle school student. It’s nice to meet you here. First, let me tell you

s  1  about my family. There are f  2  people in my family. They are my mother, my father, my sister, my brother and me. My father is a worker. My mother is an English teacher. My sister is eighteen and my brother is sixteen. I’m fourteen. We three go to the s  3  school. We all enjoy w  4  football games. My h  5  is at West Street. There is a big tree and some small trees around my house. The big one is a pear tree and the small ones are apple t  6 , but there a  7  any pears or apples on them now. H  8  is a photo of my house. In the photo, you can

s  9  three cats in my house. They are all black and white. We l  10  them very much.
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单项选择题

下列哪项疾病不宜用硝苯地平：

A．稳定型心绞痛
B．雷诺病
C．高血压
D．变异型心绞痛
E．阵发性室上性心动过速
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