氟哌啶醇与哪项药物一起静注可使人产生不入睡而痛觉消失的特殊麻醉状态
A．氯丙嗪
B．芬太尼
C．苯海索
D．金刚烷胺
E．丙米嗪
参考答案：B
--Life ____ be very hard for people living in the north of Canada as it is very
cold there in winter.
—Yes, the weather there _____ be as low as 60℃ below zero.
A．must;can
B．shall;must
C．will;should
D．hasto;can
在叶绿体的结构中，含有与光合作用有关的酶的结构是（）
A.内膜和基质
B.外膜和基质
C.外膜和内膜
D.基质和基粒
