实验室负责人应限制一般人员进入生物安全实验室
参考答案:对
______ pollution control measures are expensive, many industries hesitate to adopt them.
A.Although
B.However
C.Because
D.On account of
广东人喜爱吃蛇,尤其是“三蛇”,下列哪一项不是..广东人所爱吃的三蛇?()
A、眼睛蛇
B、过树榕
C、金环蛇
D、水蛇