一 She wears a pink skirt today.
一 Yes. beautiful she looks! The skirt is made silk.
A:What; of
B:How; from
C:How; of
Food will be in the form of p____ on Mars.
给未受粉的番茄雌蕊柱头上涂一定浓度的生长素溶液,可获得无子番茄。说明了( )
2+____=8 ____+4=10 ____+____=12
0+____ =14 15-____=5 ____-____ =7