For years scientists have been arguing about
whether nature or nurture (后天) decides what people will be like. Is it nature— what people are (41) with—
that decides what they will be like? (42) is it nurture —what(43) to people when they are born —that
decides what they will be like?
Scientists have
been studying twins to (44) if they can find the answer, because twins start out
with the (45) DNA. Sometimes twins don’t live together
at birth and grow up in different (46) and different places— so the nature is the same for both, but the nurture is different.
When scientists
(47) these twins in their later life, they some times find some surprising (48).
Jim Springer and
Jim Lewis were adopted（收养）by two different families at birth. They first met each other again thirty-nine
years (49) and discovered they had a lot in (50). Both had been (51) twice. Their
first wives were both named Linda and their second wives were both named Betty!
Each twin had a
son — one called his son James Alan and the (52) called
his son James Alan, too. Their children each had a dog called “Toy”. They even arrived at their first
(53) in the same color of car.
So far twin
(54) seem to show that both nature and nurture are important. What we have from
birth, and how and where we live help to build (55) we are.
1.A. born B.
grown C. taught D. made
2.A. So B.
And C. If D. Or
3.A. pretends B.
happens C. falls D. depends
4.A. hear B.
win C. see D. plan
5.A. nice B.
same C. full D. free
6.A. families B.
cities C. countries D. nations
7.A. believe B.
suggest C. receive D. compare
8.A. numbers B.
discoveries C. results D. decisions
9.A. ago B.
later C. forward D. behind
10.A. common B.
fact C. danger D. trouble
11.A. mentioned B.
married C. succeeded D. interviewed
12.A. either B.
else C. other D. only
13.A. competition B.
education C. purpose D. meeting
14.A. studies B.
movies C. challenges D. mysteries
15.A. what B.
when C. where D. who
