单选题 The longest river in Britain is ______.
A. the Severn River B. the Thames River
C. the Mersey River D. the Clyde River

【正确答案】 A
【答案解析】英国最长的河是塞文河(the Severn River)。泰晤士河(the Thames River)是最重要的河流。默西河(the Mersey River)在利物浦附近。克莱德河(the Clyde River)位于苏格兰。