急性血源性骨髓炎最常发生于
A．成人长骨干
B．儿童长骨干
C．成人长骨端
D．儿童长骨干骺端
E．儿童长骨骨骺
参考答案：D
. My uncle will come to Shanghai ______ next week .He says he will stay here for______.
A．sometimes; sometime
B．sometime ;some time
C．some time ;sometimes
D．some times ;sometimes
恒冷冰冻切片机箱内工作状态下温度范围是（）
A.-10℃±
B.-4℃±
C.-25℃±
D.-40℃±
E.-30℃±
