高二英语3（帮我用排除法分析下，答对并且理由详细追加20分！）

高二英语3（帮我用排除法分析下，答对并且理由详细追加20分！）
To do well on the test,().
A.don't answer anything before acareful look at the four choices
B.the four choices should be locked at carefully before you make a choice
C.before you choose an answer ,carefully look at the four choices
D.look at the four choices carefully before choosing an answer
答案是A