问题
单项选择题
下列关于缓、控释制剂材料的表述正确的是（）
A.微孔膜控释制剂通常用胃中不溶解的乙基纤维素或醋酸纤维素
B.不溶性骨架片的材料用不溶解但可熔蚀的蜡质材料组成
C.凝胶骨架片的主要骨架材料是聚乙烯
D.溶蚀性骨架片的材料采用HPMC或CMC—Na
E.渗透泵片的半透膜材料为聚维酮
答案
参考答案：A
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下列关于缓、控释制剂材料的表述正确的是（）
A.微孔膜控释制剂通常用胃中不溶解的乙基纤维素或醋酸纤维素
B.不溶性骨架片的材料用不溶解但可熔蚀的蜡质材料组成
C.凝胶骨架片的主要骨架材料是聚乙烯
D.溶蚀性骨架片的材料采用HPMC或CMC—Na
E.渗透泵片的半透膜材料为聚维酮
参考答案：A
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| Sam had a dog. Its name was Tod. It was very helpful, but it ate 1.______So he didn't like it. He wanted to 2.______ Tod. He tied Tod and put it in a small boat. He rowed (划) the boat to the 3.______of a big river. Just as he 4.______the poor animal into the river, the boat began to go down. 5.______the man and Tod fell into the river. Tod was able to swim, 6.______Sam couldn't. The dog bit ( 咬) the rope and broke it. It tried 7.______best to swim to Sam. The man was saved, so he was very 8.______to the dog, and he didn't want to kill the dog 9.______. From then on, he gave the dog as much 10.______ it wanted. |