It was ______ that they all went swimming in the river.

A．such a hot weather

B．such hot weather

C．so hot weather

D．so hot a weather

下列所示踏步尺寸，最有可能是幼儿园建筑踏步尺寸的是（）。

A.b=300mm，h=150mm

B.b=320mm，h=140mm

C.b=280mm，h=130mm

D.b=290mm，h=160mm