题目

Our teacher urges us to form a good habit of learning,          we think will benefit us in the long term.        A．what B．that   C．which       D．who 答案：C下列各组物质混合后能发生反应，但无明显现象的是(    ) A．Na2SO3溶液跟HCl溶液 B．在石灰水中不断通入CO2至过量 C．NaOH溶液跟NaAlO2溶液 D．NaOH溶液跟NaHCO3溶液