问题补充：
Not onlygive us relaxation and pleasure,but alsoincrease our knowledge.
A. can travel;it can
B. travel can;can it
C. can travel;can it
D. travel can;it can
答案：
(答案→)A. can travel;it can
B. travel can;can it
C. can travel;can it
D. travel can;it can
解析：not only放在句首，not only引导的分句要倒装。
