ne walk on two legs?"
41. michael sockol and his team were interested in
a. where humans came from.
b. how chimpanzees could be trained to use treadmills.
c. when our earliest ancestors began to live in forested areas
d. why our apelike ancestors came to walk on two legs.
42. the phrase "worked out' in paragraph 3 could be replaced by
a. calculated.
b. exercised.
c. understood.
d. planned.
43. what did the researchers find in the experiment?
a. one chimp used about the same energy in walking on two legs as on all fours
b. human walking used more energy than bipedal walking in chimps.
c. two chimps used more energy walking on two legs.
d. three chimps used less energy walking on two legs.
44. the word "quadrupeds" in paragraph 6 is a technical word for
a. creatures with four feet.
b. creatures with two feet.
c. creatures with six feet.
d. creatures with eight feet.
45. what does fossil and molecular evidence tell us about our earliest ancestors?
a. they experienced more climate changes than we do today.
b. they were forced to travel between food patches.
c. they could cover more ground with less energy.
d. they were much taller than modern man.
第5部分：补全短文(第46～50题，每题2分，共10分)
下面的短文有5处空白，短文后有6个句子，其中5个取自短文，请根据短文内容将其分别放回原有位置，以恢复文章原貌。
what，s lacking in“sicko”?
when.t comes to economic decisions，there are always trade offs(取舍)%26#8226;gain 0ne thing and you lose something else._________(46)
the central argument of michael moore’s movie“sicko”一that the cure t0 the nation，s health care problems is a single—payer system—is hardly novel and is certainly worth consideration，whether or not you agree with it.but in comparing the american system with single-payer plans of other countries—britain，france，canada and cuba mr.moore left out the trade-offs，characterizing those countries as health care paradises. ___________(47) kurt loder, the film critic who is best known as the anchor(主持人)of“mtv news，”wrole a critique(批评)of the film for mtv’s website."sicko，"he said, "does a real service”in portraying(描绘)victims of american insurance companies’-like the people，who died because their only treatment options were considered“experimental" and therefore not covered._______(48)
when" governments attempt to regulate the balance between a limited supply of health care and an unlimited demand for it，they’re inevitably forced to ration treatment’
mr. loder asserted.________(49)mr. loder cited the short film“dead meat，”which presents anecdotes(轶事)of failure in the canadian single-payer system in its one—sidedness，“dead meat'，might have made for a nice double feature with "sicko," and left movie-goers with a more complete understanding of the complications of deciding on a health care system _____________(50)
this all makes an otherwise “emotionally compelling
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