发现现场有突发情况后，现场人员立即电话上报厂主管部门。
参考答案：错
若梯形的面积为12cm2，高为3cm，则此中位线长为（ ）。
____there are many differences in personality, they have a lot____ common.
A．While; in
B．Although; on
C．In spite of; in
D．Thanks to; on
