人体内碱基互补配对发生在( )①DNA复制; ②转录; ③翻译; ④逆转录;⑤RNA复制; ⑥tRNA携带氨基酸
A:①②③
B:①②⑤
C:①③⑤⑥
D:①②③④⑤
如图,在Rt△ABC中,∠B=90°,AB=3,BC=4,点D在BC上,以AC为对角线的所有平行四边形ADCE中,DE最小的值是( )
A.study B.under C.shoes D.first E.chicken
sweater dress ____
fifth third ____
in on ____
bedroom kitchen ____
beef bread ____