问题补充：
Think twice before you others’ cheating in the exam, because you are not going to help but indeed to kill their motivation for study.
A. consist in
B. lie in
C. assist in
D. result in
答案：
A. consist in
B. lie in
(答案→)C. assist in
D. result in
解析：动词词组辨析题。A. consist in“存在于” B. lie in“位于”C. assist in“帮助”D. result in“导致”“在帮助别人在考试中作弊时，要三思而后行。因为这样只会打击他人的学习积极性。”
