II 语言知识及应用（共两节，满分35分）
完形填空（共10小题；每小题2分，满分20分）
阅读下面短文，掌握其大意；然后从21-30各题所给的A、B、C和D选项中，选出最佳选项，并在答题卡上将该项涂黑。
I take the firm position that parents do not owe their children college education．If they can __21__ it, they can certainly send them to the best universities．But they must not feel guilty if they can’t．If the children really want to go, they’ll find a __22__．There are plenty of loans and scholarships for the bright and eager ones who can’t afford to pay．
When children grow up and want to __23__, their parents do not owe them a down payment on a house．They do not have the duty to baby-sit their grandchildren．If they want to do it, it must be considered a __24__ not an obligation．
Do parents owe their children anything? Yes, they owe them a great deal．
One of their obligations is to give their children a personal __25__．A child who is constantly made to feel stupid and unworthy, constantly compared to brighter brothers, sisters, or cousins will become so __26__, so afraid of failing that he (or she) won’t try at all．Of course they should be __27__ corrected when they do wrong, but it’s often better to let children learn their mistakes by themselves __28__．All our parents should do is to trust them, respect them, tolerate them and give them chances to try and fail．They must learn to stand __29__．When criticisms are really needed, they should be __30__ with praises, with a smile and a kiss．That is the way children learn．
21．A．find B．get C．afford D．receive
22．A．supply B．help C．hand D．way
23．A．get married B．get a job C．go abroad D．live alone
24．A．pleasure B．favor C．habit D．service
25．A．worth B．affair C．belief D．respect
26．A．unknown B．unusual C．unsure D．unfair
27．A．properly B．gently C．nearly D．possibly
28．A．now and then B．in time C．at once D．right now
29．A．failure B．honor C．progress D．test
30．A．mixed B．satisfied C．shared D．balanced
缺失，口内余牙情况良好，制作基托时，以下哪项不是基托做缓冲的目的()