题目：
Did you ever have someone’s name on the tip of your tongue and yet you were unable to recall it (1) this happens again, do no (2) to recall it. Do something (3) for a couple of minutes, (4) the name may come into your head. The name is there since you have met (5) person and his name. It (6) has to be dug out. The initial effort to recall (7) the mind for operation, but it is the subconscious (8) that go to work to dig up a (9) memory. Forcing yourself to recall (10) never helps because it doesn’t (11) your memory；it only tightens it. Students find the preparatory method help (12) examinations. They read over the questions (13) trying to answer any of them. (14) they answer first the ones (15) which they are most confident. Meanwhile, deeper mental activities in the subconscious mind are taking (16) ; work is being done on the (17) difficult questions. By the time the easier questions are answered, answers (18) the more difficult ones will usually begin to (19) into consciousness. It is often (20) a question of waiting for recall to come to the memory.
12（）
A.into
B.in
C.about
D.by
答案：
参考答案：B
解析：
[考点] 语义分析
本空格后的内容提到学生在考试中的一些做法，由此可以推断本空格是要说学生发现这种方法在考试中起作用，选择in examination，意思“是在考试中这种方法奏效”，符合题意。
[干扰项分析] A选项表示“进入”；C选项表示“关于”；D选项表示“通过”，一一代入空格处，均不符合题意。
