问题
单项选择题
骨髓被异常细胞或组织浸润所致贫血是（）
A.多发性骨髓瘤
B.再生障碍性贫血
C.巨幼细胞性贫血
D.铁粒幼细胞性贫血
E.单纯红细胞再生障碍性贫血
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
骨髓被异常细胞或组织浸润所致贫血是（）
A.多发性骨髓瘤
B.再生障碍性贫血
C.巨幼细胞性贫血
D.铁粒幼细胞性贫血
E.单纯红细胞再生障碍性贫血
参考答案：A
Passage Two
What else should you do when you squat down to lift a heavy object
A．Put your knees in front of the object.
B．Keep your legs straight and forward.
C．Get as close to the object as possible.
D．Bend over the object from your waist.