— You can't imagine ______ little ants can carry ______ heavy a thing.
— That's what we should learn from ants.
A：such; so
B：so; such
C：such; such
D：so; so
随着科技的发展，各种现代技术不断得到应用，以下说法正确的是（ ）
在观察人口腔上皮细胞时先往载玻片滴一点（ ）
