Amazing! Too many private cars are trapped on the highways which is free of charge for the first time, causing heavy traffic jams, some even _______ for several hours.  

A．held up

B．broken up

C．taken up

D．given up

对待和使用心理测验，以下说法错误的是( )。

A．测验者必须具备一定的资格

B．慎重选择测验量表

C．与被试建立一般关系，无须了解被试的情况

D．注意测验的保密性