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问题 单项选择题

煎药人员收到代煎药物时，应对相关送煎单据做到五对。包括对剂数，每剂煎药袋数，每袋装药量，特殊煎煮药物，（）

A.医院名称

B.取药约定时间

C.医师签名

D.姓名

答案

参考答案：B

读图填空题

甲、乙两个水池中各有由5个物种构成的食物网，如图所示，且这两个水池的生态系统在没有人为干扰的情况下均达到相对平衡状态。请据图回答：

(1)每个水池生态系统中有_______条食物链，流经该生态系统的总能量来自_______所固定的太阳能。

(2)假如鲫鱼的1/4食物来自绿藻，1/2来自轮虫。且该系统能量从生产者到消费者的传递效率为10%，从消费者到消费者的能量传递效率为20%。如果鲫鱼种群增加的能量为200KJ，那么其中来自绿藻和轮虫的能量分别为________KJ和________KJ。

(3)为增加甲水池生态系统的多样性，向池中引种了大量浮萍，一段时间后，水面长满了浮萍，水草、绿藻和轮虫相继死亡。水草死亡的最主要原因是缺少__________，轮虫死亡的主要原因是缺少_________。此时该水池中食物链只剩下2条，请画出这2条食物链构成的食物网。____________。

(4)为促进生物量的增加，乙池中加入了较多的有机肥，一段时间后，池中绿藻爆发，其他4种生物陆续死亡，动物死亡的主要原因是水中缺少_________。不久，绿藻也大量死亡，水体发臭。导致水体发臭的生物因素是______________。
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单项选择题

A city councilman has proposed a controversial new plan to increase city revenues from the parking places downtown. He has proposed that instead of charging $1.20 per hour for parking in these spots, the city should make all parking spots five-minute loading zones, and then assess $15 parking fines on anyone who parks in the spots for more than five minutes. Which of the following, if true, provides the pest argument that the councilman’s plan will not increase the city’s revenue ？（）

A. A system that promotes parking fines will anger citizens, and they will consequently vote the councilman out of office if the plan goes through.

B. The city owns only 14 parking spots in the downtown area.

C. The costs of assessing and collecting the parking fines will surpass the revenues likely to be collected from the new plan.

D. Ray’s parking garage, the only competition for the city-owned parking places downtown, charges $18 per day for its parking places.

E. It has been observed that on an average day, approximately three different cars park in each of the city-owned parking spots downtown.
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