Living things are ________ cells, and cells do not grow to more than twice the s

游客2024-01-16  20

问题 Living things are ________ cells, and cells do not grow to more than twice the size they were at first.

选项 A、made from
B、made up of
C、made up from
D、made of

答案 B

解析 本题考查动词短语。be made up of“由…组成”;be made of“由… 制成(看得出原材料)”;be made from“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。
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