题目内容
（请给出正确答案）
[主观题]
________ the weather improves, we will suffer a huge loss in the tourist industry. A
________ the weather improves, we will suffer a huge loss in the tourist industry.
A) As
B) Since
C) While
D) Unless
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治疗急性白血病患者出血症状的有效措施是()
A、输注新鲜全血
B、应用止血药物
C、输注浓集血小板悬液
D、应用促凝药物
E、以外止血为主
