题目

我国唯一注入北冰洋的河流是A．珠江B．雅鲁藏布江C．额尔齐斯河D．澜沧江 答案：【答案】C【解析】试题分析：珠江注入太平洋，雅鲁藏布江印度洋，额尔齐斯河注入北冰洋，澜沧江注入太平洋。所以根据题意选C。—If a="4," b="5," what’s the answer to the question “ a + 2ab +1 =?” ?   —     . ? A．Forty-fifth B．Forty-five ? C．Twenty-three D．One hundred and twenty-one