骨质软化的X线表现为()。
A.骨密度增高
B.骨密度减低
C.骨结构清晰
D.骨结构模糊
E.骨密度不均匀
参考答案:B, D
指出下列句中的通假字,并解释。
(1)公输盘不说:____________________________
(2)子墨子九距之:__________________________
(3)子墨子之守圉有余:______________________
(4)公输盘诎:______________________________
Breakfast is _______ meal of the day. It gives us energy after a long night without food.
A.important
B.more important
C.the most important
D.very important