三角形的面积由底和高决定.______.
因为三角形的面积=底×高÷2,所以:三角形的面积是由底和高决定的;
故答案为:正确.
Does your sister exercise after school? [ ]
A. gets many
B. get much
C. gets lot
D. get lot of
囟门与骨缝早闭见于()
A.佝偻病
B.服用四环素类药物后
C.颅内压增高
D.脱水
E.小头畸形