某考试卷中有若干选择题，每答对一题加2分，答错或不答一题扣1分，一考生答对的选择题数量是答错或不答的5倍，选择题共得到45分。问试卷中有多少道选择题？（）
A.50
B.30
C.25
D.20
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某考试卷中有若干选择题，每答对一题加2分，答错或不答一题扣1分，一考生答对的选择题数量是答错或不答的5倍，选择题共得到45分。问试卷中有多少道选择题？（）
A.50
B.30
C.25
D.20
What advice does the author give topeople engaged in a fierce debate?
A) They listen carefully to theiropponents’ views.
B) They slow due respect for eachother’s beliefs.
C) They present their viewsclearly and explicitly.
D) They take care not to hurt eachother’s feelings.