作为中学生，对待弘扬和培育中 * * 精神的应有态度是（） A.弘扬和培育中 * * 精神是

— ________ does he want to be a police officer?

— Because it's interesting. [ ]

A. Why

B. How

C. What

D. Where

改错。

1. (      ) He can't speak English very good.                  _________ 

                      A       B                C     D

2. (      ) John did badly in the test. I did even badly.     _________ 

                       A   B                       C              D 

3. (      ) She's a little more happy than I am.                _________ 

                        A         B             C     D

4. (      ) I enjoy to read books during the vacation.       _________ 

                    A      B                   C          D

5. (      ) He often takes his bike to the bus station.        _________

                    A        B   C        D

下列过程或现象与盐类水解无关的是

A．纯碱溶液去油污

B．稀醋酸溶液加热时其pH 减小

C．小苏打溶液与AlCl₃溶液混合产生气体和沉淀

D．浓的硫化钠溶液有臭味

对发行人来说，最方便安全、快捷的发行方式为 ( )

A．全额包销

B．包销

C．余额包销

D．代销

（4分）用化学用语填空：

（1）2个铝离子     ；        （2）3个甲烷分子     ；

（3）最常用的溶剂     ；      （4）人体缺少     元素，易患骨质疏松症。