问题补充：
New trucks are widely used in the countryside in the city.
A. as well
B. both and
C. also
D. as well as
答案：
A. as well
B. both and
C. also
(答案→)D. as well as
解析：
这题考查as well as“不但…而且…，和”的意思，连接两个并列的成分，句意是：新卡车在乡村和城市广泛使用。as well是“也”，B项应该是：both…and…。选D。
