OECD综合领先指标(Composite LeADing InDiCAtors,CLIs)报告前()的活动
A. 1个月
B. 2个月
C. 一个季度
D. 半年
The author quotes what Dan Gilbert said to prove that______.
A. happiness lies in how others see you
B. happiness comes from how you are feeling
C. human being are more happier than other animals
D. there are people who are by nature happy or unhappy
—Have you______some new ideas? —Yeah, Ive new idea.
A. come about
B. come into
C. come up with
D. come out with
用基准氧化锌标定EDTA滴定液时,ZnO与EDTA的摩尔比
A. 1∶1
B. L∶2
C. 1∶4
D. L∶3
E. 1∶6