第二节：完形填空 (共20小题，每题1分, 满分20分)
阅读下面短文，掌握其大意，然后从21-40各题所给的四个选项（A、B、C和D）中，选出最佳选项。
With the introduction of family planning policies in the 1970s, most Chinese teenagers have no brothers or sisters．They get to be the beloved（心爱的）__21__child．But they may not realize that they will have to “__22__” the love as their__23__ones grow old．They will have to__24__lots of old people—their parents, grandparents, their_   25  _parents and grandparents．China is becoming__26_  country．
According to the United Nations, an aging society refers to one   27   10 percent or more of the population is over 60, or 7 percent or more is over 65. According to   28   from the Ministry of Civil Affairs, by 2008, Chinese over 60 years old made up 12 percent of the nation’s total population. The    29    for those aged 65 or older was 8.3 percent.
In China, people have a belief that “parents raise children; then the children care for the parents as they get old”．But this__30__is under stress as the market economy puts millions of young Chinese on the road__31__better paying jobs．They are leaving their parents__32_．Now many families are looking more to the government than to their__33__for support when they’re old．China has increased its basic social security（基本社会保险）plan which is__34__protecting those__35__, including the old, the disabled and others．These programs are now broad, __36_they are still not highly developed．
As more people grow__37__, China will have fewer working people, __38__will slow down economic growth．According to a November 26 report in the Economic Information Daily, an expert said China should __39__its people to have more than one child in the future__40_China should keep its labor population and total population size stable（稳定的）．
21．A．only        B．lonely    C.friendly        D．heartily
22．A．take up  B．take back  C．pay back D．pay for
23．A．hated     B．loved       C．tired      D．hearted
24．A．care for    B．bring up   C．look for    D．pay attention to
25．A．daughter’s or son’s     B．niece’s or nephew’s
C．wife’s or husband’s       D．aunt’s or uncle’s
26．A．an old      B．an aging   C．a developing    D．a developed
27．A．where       B．when     C．which       D．that
28．A．an article  B．an email   C．a magazine      D．a report
29．A．conclusion      B．character       C．figure      D．survey
30．A．tradition   B．opinion  C. saying          D．way
31．A．in favor of      B．in search of   C．in the way of    D．in the face of
32．A．out   B．off   C．ahead     D．behind
33．A．friends     B．relatives    C．parents     D．children
34．A．an act      B．a case       C．a program       D．a plan
35．A．in danger        B．in need     C．in desperate      D．in disaster
36．A．but    B．or     C．and   D．so
37．A．strong    B．realistic  C．rich   D．old
38．A．as     B．which       C．what  D．that
39．A．forbid      B．promise   C. encourage        D．order
40．A．so that      B．though      C．even if     D．because