糖尿病病人口服磺脲类降糖药的主要不良反应是
A．低血压B．低血糖C．停药后血糖反射性升高D．心率加快E．头晕
参考答案：B
—Did Betty go shopping with you yesterday?
—Even if she _____ a lot of studying, she would have preferred staying home to going shopping．
A．didn’t have
B．shouldn’t have
C．hadn’t had
D．hasn’t had
化工用泵拆卸时有哪些注意事项？
