下列属于第一类精神药品的是
A．吗啡B．司可巴比妥C．可卡因D．地西泮E．艾司唑仑
参考答案：B
The old building which ______ the 5th century is going to be rebuilt.
A．dating from
B．dates from
C．dated from
D．dating back to
“致灾速祸”中的“速”意思是（）
A.快速
B.短时间
C.加速
D.招致
E.得到
