A:Am
B:Is
C:Are
“The best brain.” is ______ an interesting TV show ____ many people like watching it.
函数fx=sinxsinx+π2的最小正周期为( )
对正处在生长发育时期的青少年来说,一日三餐都很重要.根据合理营养的要求,在每日摄取的总能量中,哪餐摄入的能量应最多( )