凝固点是在规定的条件下，冷却试样到不能流动是的最低温度。
参考答案：错
—Why are those people gathering in the middle of the street?
—I don’t know. There ________ be an accident.
A．shall
B．should
C．can
D．might
725×69÷23的值是( )。
A．2175
B．2075
C．4175
D．3075
