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【单选题】
根据下面材料，回答题。 患者，男，50岁。平素喜饮白酒，近日牙龈红肿作痛，伴口苦心烦，舌质暗红，脉沉数有力。应首选的药物是黄连，生物碱为其主要有效成分。 黄连生物碱的生物活性是 查看材料A.
抗菌、抗病毒
B.
止血
C.
收缩血管、兴奋中枢神经
D.
消肿利尿、抗病原体
E.
镇静、镇痛
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皮皮学刷刷变学霸
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【简答题】选择性激动β2受体的药物是（ ）
【简答题】选择性激动β2受体的药物是
【单选题】The more flexible the training schedule is, ______ it will be.
A.
efficient
B.
more efficient
C.
the more efficient
D.
the most efficient
【简答题】A．The tuition fee is lower. B．It is more flexible. C．The professors are more famous. D．It helps to reduce traffic jams.
【单选题】The more flexible a system is , ( ) difficult it becomes to learn and operate.
A.
the more
B.
most
C.
the most
D.
more
【单选题】The courts were asked to a more flexible approach toyoung offenders.
A.
held up
B.
suffers
C.
positioned
D.
adopt
【单选题】Is it Rogers’s opinion that the Classical model of argument and even the more flexible Toulmin model tend to divide people into three camps: good guys, bad guys and the neutrals?
A.
True
B.
False
C.
It depends
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