题目

x2＋3x＋2＝0(公式法)． 答案： 解：x1＝－1，x2＝－2 --- I hear all the museums will be open to people free in Hangzhou soon. --- That’s good news. More people will ________ their weekends visiting the museums. A．spend            B．take              C．cost              D．pay