A:蝗虫的卵巢是观察动物细胞减数分裂的最佳材料
B:在果蝇杂交实验中,摩尔根等人运用假说﹣演绎法证明了基因在染色体上
C:在探究温度对酶活性的影响实验中,可选用过氧化氢为底物
D:调查人群中红绿色盲的发病率,应在患者家系中调查
—What colour are the bananas?
— _______ yellow.
-- That T-shirt with Yao Ming's picture on it ____ belong to David. He admires him a lot.
-- No, it _____ be his. He hates black color.