已知函数f(x)=x2+2x+3,则f(1)=( )
A.9
B.8
C.7
D.6
∵f(x)=x2+2x+3,∴f(1)=1+2+3=6,
故选D.
Our watch is very nice. ________. [ ]
A. No, it isn't
B. Yes
C. Thank you
D. Sorry
药品生产企业提请药品检验所进行的检验属于
A.抽查性检验B.委托检验C.复核检验D.技术仲裁检验E.进出口药品检验