---There is a tall building on Taoze Road. Do you know?---I know it. It has 10 floors.A.

问题补充：

---There is a tall building on Taoze Road. Do you know?

---I know it. It has 10 floors.

A. most

B. at least

C. least

D. will

答案：

A. most

(答案→)B. at least

C. least

D. will

解析：考查短语：at least至少，句意：在Taoze Road有一座高楼，你知道吗？我知道，它至少有十层。故选B。