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【单选题】
青霉素分子中所含的手性碳原子数应为A.
一个
B.
两个
C.
三个
D.
四个
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皮皮学刷刷变学霸
举一反三
【多选题】下列关于休克患者的处理，正确的有（）。
A.
合并颌面部严重创伤的休克患者，首先应当保证气道通畅
B.
内失血性休克宜在抗休克的同时立即手术止血
C.
合并骨折的休克患者，术前宜给予止痛
D.
失血性休克患者，宜及时使用升压药
E.
感染性休克患者，抗生素治疗比手术治疗更重要
【简答题】But somewhere along the way, the message changed.
【单选题】Somewhere along the________, holiday tipping went from an optional thank-you for a year of services to a Mafia-style protection racket.
A.
line
B.
queue
C.
thread
D.
parade
【单选题】Which of the following reconstructions best captures the argument in this passage from Ben Selznik, “Make it 18”: ...Currently, each state has its law set at 21. [This] reflects the fact that drinking...
A.
(1) Each state sets its drinking age at 21. (2) Drinking age became tied to highway funds somewhere along the way. ∴ (3)
B.
(1) Drinking age became tied to highway funds somewhere along the way. (2) Were a state to lower their drinking age, they would also have to significantly raise taxes to offset the lost highway funds from the government. ∴ (3) Each state sets its drinking age at 21. (from 1-2)
C.
(1) Drinking age became tied to highway funds somewhere along the way. (2) When drinking age is tied to highway funds, then, if a state lowers its drinking age below 21, then it will lose federal highway funds. ∴ (3) If a state lowers its drinking age below 21, then it will lose federal highway funds. (from 1-2) (4) If a state loses federal highway funds, then it would have to significantly raise taxes to offset the lost highway funds. ∴ (5) If a state lowers its drinking age below 21, then it would have to significantly raise taxes to offset the lost highway funds. (from 3-4) ∴ (6) States do not lower their drinking age below 21. (from 5) ∴ (7) Each state sets its drinking age at 21. (from 6)
D.
(1) Drinking age became tied to highway funds somewhere along the way. (2) When drinking age is tied to highway funds, then, if a state lowers its drinking age below 21, then it will lose federal highway funds. ∴ (3) If a state lowers its drinking age below 21, then it will lose federal highway funds. (from 1-2) (4) If a state loses federal highway funds, then it would have to significantly raise taxes to offset the lost highway funds. ∴ (5) If a state lowers its drinking age below 21, then it would have to significantly raise taxes to offset the lost highway funds. (from 3-4) (6) States do not do what will make them have to significantly raise taxes. ∴ (7) States do not lower their drinking age below 21. (from 5-6) (8) If states do not lower their drinking age below 21, then they set their drinking age at 21. ∴ (9) States set their drinking age at 21. (from 7-8)
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