治疗高血压伴心率过快，应首选
A．α-受体阻滞剂B．β-受体阻滞剂C．钙拮抗剂D．利尿剂E．血管紧张素转化酶抑制剂
参考答案：B
It even leaves the scientists in wonder ________ they should call the newlyborn creature, which looks halfhuman and halfanimal.[ ]
A．that
B．why
C．what
D．how
BB010拆装水力锚时不许把管钳打在（）上。
A.胶筒
B.密封件
C.胶圈
D.锚牙块
