人感染H5N1禽流感病例的病死率要高于人感染H7N9禽流感病例（）
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Which of the following sentences is the most proper？______
A. The poor old fellow died lonely last night.
B. The poor old fellow perished lonely last night.
C. The poor old fellow kicked the bucket lonely last night.
D. The poor old fellow departed lonely last night.
国家免疫规划疫苗是政府要求儿童必须接种的自费疫苗（）
在托幼机构发生手足口病暴发疫情时，应对密切接触者进行EV71疫苗应急接种，避免重症死亡病例的出现（）
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