A-A+
Living things are_________ cells and cells do
问题详情
Living things are_________ cells，and cells do not grow to more than twice the size they were at first.
A.made from
B.made up of
C.made up from
D.made of请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
B本题考查动词短语。bemadeupof“由…组成”．bemadeof“由…制成（看得出原材料）”；bemadefrom“由…制成（看不出原材料）”。句意为：生物由细胞组成，细胞不会生长到原来大小的两倍。
