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.
19（）
A.appear
B.grow
C.extend
D.come
参考答案：D
解析：
[考点] 词义辨析
根据上下文语义，潜意识这时候开始形成，帮助人们解答那些比较难的问题。D为正确答案，come into consciousness表示“有了意识”。
[干扰项分析] A选项appear一般主语是something；B选项grow放在此无法与conscious搭配；C选项extend意为“扩展、延伸”，与前面的begin表示的意义相左，故应排除。