A:are supposed
B:suppose
C:are supposing
D:supposed
— Jim's mother dislikes cartoons in the Past, but now she likes to watch them with little Jim.
— Oh, just as the saying goes, .
“试管婴儿”是目前应州最广的生殖辅助技术,这种技术的特点是____ 生殖____ 受精____ 发育。