第20题: [单项选择]The manager noted that sales of smaller models had risen significantly but ______ mentioned the drop-off in orders for the electric version. A. too B. also C. either D. besides 参考答案:B 答案解析:本题需选择适当的副词。连词but前后的had risen significantly(显著上涨)和the drop off in orders for the electric version(电子版