问题
选择题
Bikes ______ in the 1880s and they ______ traveling around.
A．were invented; were used as
B．were invented; are used for
C．was invented; was used for
D．invented; are used to
答案
答案：B
考查被动语态。句意“自行车是在十九世纪八十年代发明的，它们被用来进行旅游观光。”bike和invent之间是被动关系，故用被动语态，排除D；主语是复数，排除C；be used as“被用作......”；be used for doing sth.“被用来做某事”。故选B。
