My suggestion is that she _____ some exercise regularly, and soon she'll recover completely.[ ]

A. takes

B. must take

C. take

D. took

大豆作物不同品种花簇的大小可按花簇的长短分为长轴型、中长轴型和短轴型三种，短轴型花簇较短，，轴上着生花数较少，长度在0.5-3cm，轴上着生花数3-10朵，各节结荚1-5个，属（）品种。

A、有限结荚习性

B、无限结荚习性

C、亚限结荚习性

D、无