痛经患者，腹痛多发于( )
A．经前3～4天B．经前5～6天C．经净后1～2天D．经净后3～4天E．经前1～2天
参考答案：E
__ _in a heavy traffic jam in a taxi while you are hurrying to the airport is quite a unpleasant experience．
A．Having caught
B．Being caught
C．Caught
D．Having being caught
