脂酸的______是Knoop于1904年最初提出来的。
查看答案
通过两分子______与一分子______反应可以合成一分子磷脂酸。
Alice: Why didn‘t you show up for class this morning?
Ella:. You know, I live far from the school.
A. It" s a fine day
B. My car broke down
C. It" s not the case
D. That" s good
请回答题(74)题 查看材料
A. made
B. done
C. finished
D. performed
A: Allow me to introduce myself. My name is Brown, the manager of the company.
B:__________
A. You must be mistaken. I don"t know you at all.~
B. Hello, Brown! Haven"t seen you for ages.
C. How do you do, Mr. Brown? Very happy to see you.
D. Hi, Brown ! Welcome to China.