Annie was busy ______her boyfriend last night.
A. to write to
B. writing
C. writing to
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下列哪项不是急性胃炎的发病因素
A. 手术应激
B. 胃黏膜营养因子缺乏
C. 胃切除术后胆汁反流
D. 幽门螺杆菌
E. 使用阿司匹林药物
滴丸
A. 将药物填装于空心硬质胶囊中或密封于弹性软质胶囊中而制成的固体制剂
B. 用升华或融合等方法制成的矿物类不同结晶形固体制剂
C. 将固体或液体药物与适当物质(一般称为基质)加热熔化混匀后，滴入不相混溶的冷凝液中，收缩冷凝而制成的小丸状制剂
D. 以动物皮、骨甲或角为原料，用水煎取胶质，浓缩成千胶状的内服制剂
E. 由药物与辅料构成的直径小于2．5mm的球状实体
Mark tried to tie the boat to the buoy so that______.
A. he could spend the night on it while John was looking for help
B. he and John could go sailing again when the fog cleared
C. they would be safer
______Lily______ I have been to the Great wall.
A. Either; or
B. Neither; nor
C. Both; and
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