Word提供的替换功能一般用于以新内容替换文档中原有的内容。（）
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2009年1～5月，全国钢坯月均进口量为多少万吨？()
A. 45．6
B. 46.2
C. 47.4
D. 49
In some countries bathing is expensive because ______.
A. there is not enough water
B. electricity and wood are expensive
C. there are not many baths
D. bath-houses are rare
因为内存储器的存储容量较小，所以它存取数据的速度比外存储器要慢。（）
A. 正确
B. 错误
Australia is about ______ million square kilometers.
A. 9.7
B. 2.0
C. 17.4
D. 7.7
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