问题
选择题
He didn't believe it was true until he _____ her offer of a job. [ ]
A. swept up
B. sped up
C. picked up
D. took up
答案
答案：D
搜题请搜索小程序“爱下问搜题”
He didn't believe it was true until he _____ her offer of a job. [ ]
A. swept up
B. sped up
C. picked up
D. took up
答案：D
）对花香和果香的香韵具有提升作用，故常用于化妆品和食品工业。乙酸苯甲酯的合成路线如下：
b．
c．
d．
c．2CH3CHO+O2
2A
）)在催化剂作用下反应制备。
