— Excuse me, can you tell me __________?
— Sorry. I am new here, too.
A:where is the Baise Expo
B:where was the Baise Expo
C:where the Baise Expo is
D:where the Baise Expo was
想一想,再比一比,把序号写进框里。
①2个十,9个一②100③36+7④6个十,0个一⑤5个十,1个一
____
中国从中东进口石油的必经之路是( )
现有两瓶世代连续的果蝇,甲瓶中的个体全为灰身,乙瓶中个体既有灰身也有黑身个体。让乙瓶中的全部灰身个体与异性黑身果蝇交配,若后代都不出现性状分离则可以认定( )