热原的除去方法不包括（）
A.高温法
B.酸碱法
C.吸附法
D.微孔滤膜过滤法
E.离子交换法
参考答案：D
– Why did they help Mrs Brown with her work?
– Because she was _____.
A．an old friend of them
B．the friend of them
C．a the their friend
D．a good friend of theirs
一年中最高气温出现在夏季，大陆上多出现在8月，海洋上多出现在7月。
