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）__36__child．But they may not realize that they will have to “__37__”the love as their__38__ones grow old．They will have to__39__lots of old people—their parents, grandparents, their__40_parents and grandparents．China is being__41__country．

According to the United Nations, an aging society refers to one   42   10 percent or more of the population is over 60, or 7 percent or more is over 65. According to   43   from the Ministry of Civil Affairs, by 2008, Chinese over 60 years old made up 12 percent of the nation’s total population. The   44  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__45__is under stress as the market ey puts millions of young Chinese on the road__46__better paying jobs．They are leaving their parents__47  ．Now many families are looking more to the government than to their__48__for support when they’re old．China has increased its basic social security（基本社会保险）plan which is__49__protecting those__50__, including the old, the disabled and others．These programs are now broad, __51__they are still not highly developed．

As more people grow__52__, China will have fewer working people, __53__will slow down economic growth. According to a November 26 report in the Economic Information Daily, an expert said China should  54  its people to have more than one child in the future  55  China should keep its labor population and total population size stable(稳定的).

1.A．only               B．lonely           C．friendly         D．heartily

2.A．take up            B．take back        C．pay back         D．pay for

3.A．hated              B．loved            C．tired            D．hearted

4.A．care for           B．bring up         C．look for         D．pay attention to

5.A．daughter’s or son’s B．niece’s or nephew’s                  

C．wife’s or husband’s   D．aunt’s or uncle’s

6.A．an old             B．an aging         C．a developing     D．a developed

7.A．where              B．when             C．which            D．that

8.A．an article         B．an email         C．a magazine       D．a report

9.A．conclusion         B．character        C．figure           D．survey

10.A．tradition         B．opinion          C．saying           D．way

11.A．in favor of       B．in search of     C．in the way of    D．in the face of

12.A．out               B．off              C．ahead            D．behind

13.A．friends           B．relatives        C．parents          D．children

14.A．an act            B．a case           C．a program        D．a plan

15.A．in danger         B．in need          C．in desperate     D．in disaster

16.A．but               B．or               C．and              D．so

17.A．strong            B．realistic        C．rich             D．old

18.A．as                B．which            C．what             D．that

19.A．forbid            B．promise          C．encourage        D．order

20.A．so that   B．though   C．even if  D．because

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）__36__child．But they may not realize that they will have to “__37__”the love as their__38__ones grow old．They will have to__39__lots of old people—their parents, grandparents, their__40_parents and grandparents．China is being__41__country．
According to the United Nations, an aging society refers to one   42  10 percent or more of the population is over 60, or 7 percent or more is over 65. According to   43  from the Ministry of Civil Affairs, by 2008, Chinese over 60 years old made up 12 percent of the nation’s total population. The   44  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__45__is under stress as the market ey puts millions of young Chinese on the road__46__better paying jobs．They are leaving their parents__47 ．Now many families are looking more to the government than to their__48__for support when they’re old．China has increased its basic social security（基本社会保险）plan which is__49__protecting those__50__, including the old, the disabled and others．These programs are now broad, __51__they are still not highly developed．
As more people grow__52__, China will have fewer working people, __53__will slow down economic growth. According to a November 26 report in the Economic Information Daily, an expert said China should  54 its people to have more than one child in the future  55 China should keep its labor population and total population size stable(稳定的).

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)1child.But they may not realize that they will have to “2”the love as their3ones grow old.They will have to4lots of old people—their parents, grandparents, their5parents and grandparents.China is being6country.
According to the United Nations, an aging society refers to one710 percent or more of the population is over 60, or 7 percent or more is over 65. According to8from the Ministry of Civil Affairs, by 2008, Chinese over 60 years old made up 12 percent of the nation’s total population. The 9for 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 this10is under stress as the market ey puts millions of young Chinese on the road11better paying jobs.They are leaving their parents12.Now many families are looking more to the government than to their13for support when they’re old.China has increased its basic social security(基本社会保险)plan which is14protecting those15, including the old, the disabled and others.These programs are now broad,16they are still not highly developed.
As more people grow17, China will have fewer working people,18will slow down economic growth. According to a November 26 report in the Economic Information Daily, an expert said China should19its people to have more than one child in the future20China should keep its labor population and total population size stable(稳定的).

1. 1.
   1. A.
      only
   2. B.
      lonely
   3. C.
      friendly
   4. D.
      heartily
2. 2.
   1. A.
      take up
   2. B.
      take back
   3. C.
      pay back
   4. D.
      pay for
3. 3.
   1. A.
      hated
   2. B.
      loved
   3. C.
      tired
   4. D.
      hearted
4. 4.
   1. A.
      care for
   2. B.
      bring up
   3. C.
      look for
   4. D.
      pay attention to
5. 5.
   1. A.
      daughter’s or son’s
   2. B.
      niece’s or nephew’s
   3. C.
      wife’s or husband’s
   4. D.
      aunt’s or uncle’s
6. 6.
   1. A.
      an old
   2. B.
      an aging
   3. C.
      a developing
   4. D.
      a developed
7. 7.
   1. A.
      where
   2. B.
      when
   3. C.
      which
   4. D.
      that
8. 8.
   1. A.
      an article
   2. B.
      an email
   3. C.
      a magazine
   4. D.
      a report
9. 9.
   1. A.
      conclusion
   2. B.
      character
   3. C.
      figure
   4. D.
      survey
10. 10.
    1. A.
       tradition
    2. B.
       opinion
    3. C.
       saying
    4. D.
       way
11. 11.
    1. A.
       in favor of
    2. B.
       in search of
    3. C.
       in the way of
    4. D.
       in the face of
12. 12.
    1. A.
       out
    2. B.
       off
    3. C.
       ahead
    4. D.
       behind
13. 13.
    1. A.
       friends
    2. B.
       relatives
    3. C.
       parents
    4. D.
       children
14. 14.
    1. A.
       an act
    2. B.
       a case
    3. C.
       a program
    4. D.
       a plan
15. 15.
    1. A.
       in danger
    2. B.
       in need
    3. C.
       in desperate
    4. D.
       in disaster
16. 16.
    1. A.
       but
    2. B.
       or
    3. C.
       and
    4. D.
       so
17. 17.
    1. A.
       strong
    2. B.
       realistic
    3. C.
       rich
    4. D.
       old
18. 18.
    1. A.
       as
    2. B.
       which
    3. C.
       what
    4. D.
       that
19. 19.
    1. A.
       forbid
    2. B.
       promise
    3. C.
       encourage
    4. D.
       order
20. 20.
    1. A.
       so that
    2. B.
       though
    3. C.
       even if
    4. D.
       because

Can people change their skin color without suffering like pop king Michael Jackson? Perhaps yes.Scientists have found the gene that determines skin color.

　 The gene comes in two versions, one of which is found in 99 per cent of Europeans.The other is found in 93 t0 100 per cent of Africans, researchers at Pennsylvania State University report in the latest issue of Science.

Scientists have changed the color of a dark - striped zebrafish(斑马鱼) to uniform gold by inserting a version of the pigment(色素) gene into a young fish.As with humans, zebrafish skin color is deter-mined by pigment cells，which contain melanin(黑色素).The number, size and darkness of melanin perpigment cell determine skin color.

It appears that, like the golden zebrafish, light - skinned Europeans also have a mutation (变异) in the gene for melanin production.This results in less pigrnented skin.

　 However, Keith Cheng, leader of the research team, points out that the mutation is different in hu-man ancl zebrafish genes.

　 Humans acquired dark skin in Africa about l.5 million years ago to protect bodies from ultra - violetrays of the sun. which can cause skin cancer.

But when modem humans leave Africa to live in northem latitudes, they need more sunlight on their skin to produce vitamin D. So the related gene changes, according to Cheng.

Asians have the same version of the gene as Africans, so they probably acquired their light skin through the action of some other gene that affects skin color, said Cheng.

The new discovery could lead to medical treatments for skin cancer.lt also could lead to research in-to ways to change skin color without damaging it like chemical treatment did on Michael Jackson.

56.Scientists have done an experiment on a dark -striped zebrafish in order to

A.fincl the different genes o humans'

B.prove the humans' skin color is determined by the pigment gene

C.find out the reason why the Africans' skin color is dark

D.fincl out the ways of changing people's skin color

57.lt can be inferred from the passage that　　　 .

A.nowadays people who want to change their skin color have to suffer 8 lot from the damage caused by the chemical treatment

B.Europeans and Africans have the same gene

C.the new discovery could help to find medical treatments for skin cancer

D.there are two kinds of genes

58.The passage mainly tells us that　　　 .

A.scientists have found out that people's skin color is determined by the gene

B.the new discovery could lead to research into ways to change skin color safely

C. pop king Michael Jackson often changed his skin color as he liked

D.people can not change their skin color without any pain

59.The reason why Europeans are light - skinned is probably that　　　 .

A.they are bom light - skinned people

B.light - skinned Europeans have mutation in the gene for melanin production

C. th　　　 ey have fewer activities outside

D.they pay much attention to protecting their skin

60.The writer's attitude towarcls the discovery is　　　 .

A.neutral　　　　　　　 B.negative　　　　　　　　　　 C.indifferent　　　　 D.positive