A:So curious were the couple
B:So curious the couple were
C:How curious the couple were
D:The couple were such curiou
现已知构成蛋白质的氨基酸共20种,它们的平均分子量为128,由50个氨基酸形成的某蛋白质的一条多肽链的分子量是( )
1.318=x3.6
x=( )