小桥指跨径符合何种条件的桥梁：

A. Fifteen million dollars.
B. Five million dollars.
C. Fifty million dollars.
D. Fifty-five million dollars.

A. come in
B. come out
C. take in
D. take on

A. ensure
B. assure
C. reassure
D. guarantee

A. related
B. hidden
C. disguised
D. reserved