W: Not yet. Are there a lot of changes?
M: There sure are. Instead of paying one fee to cover all meals for the whole school year, we will now be able to choose how many per week we want and can contract for just that amount. We still have to pay for the whole year at the beginning. But we can choose to buy seven, ten, fourteen or twenty-one meals per week. They give you a card with the number of meals you get for a week marked on it.
W: That's a big change Tom. And a complicated system.
M: Yeah. But it will be much better for people who don't eat three meals a day, seven days a week in the cafeteria because they won't have to pay for meals they don't eat.
W: So what's the deal for those who do eat at school all the time?
M: It's better for them too. Because the more meals you contract for, the cheaper each one is.
W: I see. It still sounds rather complicated.
M: True. It took me several hours to figure it out. I decided to go with the ten-meal plan.
W: Why is that?
M: Well, I never eat breakfast and I often go away on weekends. So the ten-meal plan gives me lunch and dinner every weekday at a fairly low price. And I won't be paying for meals I don't usually eat.
W: And what about the weekend when you are on campus?
M: Well, there are often guests on campus on weekends. So they allow you to huy single meals on a walk-in basis on Saturdays and Sundays. The price per meal is much higher in that way. But I am away so much that it will still be less money for me to pay single prices on tile weekends rather than sign up for the fourteen meal a week plan. W: Oh, I guess I'll have to sit down and figure out my eatting pattern so 1 can get the best deal.
What's the main feature of the new method of paying for meals?
A.All students pay the same amount per year.
B.Students choose how many meals a week they will pay for.
C.Students get money back for meals they don't eat.
D.Some students get free meals.
第1题
下列叙述不正确的是
A.乙酰半胱氨酸为强还原剂,避免与氧化剂合用
B.乙酰半胱氨酸不宜与青霉素混合使用
C.乙酰半胱氨酸可与异丙肾上腺素合用,避免支气管痉挛
D.乙酰半胱氨酸可使痰的黏度降低
E.乙酰半胱氨酸可用于支气管哮喘的患者
第2题
A.乙酰半胱氨酸能裂解浓痰中糖蛋白多肽链中的二硫键,使浓痰易于咳出
B.乙酰半胱氨酸可用于对乙酰氨基酚中毒解救
C.乙酰半胱氨酸能减弱青霉素类、头孢菌素类、四环素类药物的抗菌活性
D.对痰液较多的患者,乙酰半胱氨酸可与中枢性镇咳药合用增强疗效
E.因胃黏膜分泌的黏液糖蛋白肽链中具有二硫键,故有消化道溃疡病史的患者慎用乙酰半胱氨酸
第3题
可用于解救对乙酰氨基酚中毒的药物是
A、乙酰半胱氨酸
B、山莨菪碱
C、苯妥英钠
D、阿托品
E、卡马西平
第4题
A.N-乙酰半胱氨酸可清除多种自由基,临床越早应用效果越好
B.治疗过程中应严格控制给药速度,以防不良反应
C.可用于治疗儿童非对乙酰氨基酚所致药物性急性肝衰竭
D.可用于治疗早期成人急性肝衰竭
第5题
A.化学名为N-乙酰基-L-半胱氨酸
B.结构中含有巯基,易被氧化,需密闭避光保存
C.是外周性镇咳药
D.在肝内可脱去乙酰基代谢为半胱氨酸
E.可用于对乙酰氨基酚中毒的解毒
第6题
A乙酰半胱氨酸
B右美沙芬
C盐酸氨溴索
D 喷托维林
E羧甲司坦
具有半胱氨酸结构 ,用于对乙酰氨基酚的解毒是
半胱氨酸类似物 不能用于对乙酰氨基酚的解毒是
第8题
下列叙述不正确的是
A.乙酰半胱氨酸应用电塑料或玻璃制成的容器保存
B.乙酰半胱氨酸不宜与青霉素混合使用
C.乙酰半胱氨酸可与异丙肾上腺素合用,避免支气管痉挛
D.乙酰半胱氨酸常与NaHCO3混合使用
E.乙酰半胱氨酸可引起转氨酶升高
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