时间:2016-03-30 07:24:47
The second study, by Kimberley Hockings of Oxford Brookes University, was a14-month study of Bossou chimpanzees crop-raiding, a situation in which theyhave to compete for rare and unpredictable Resources. _____(50)
46.题干】_____
选项】
A.Standing on two legs allows them to carry much more at one time because itfrees up their hands.
B.But an international team of researchers, including Dr. Richmond from GW'sColumbian College of Arts and Sciences，have discovered that human walkingupright, may have originated millions of years ago as an adaptation to carryingscarce, high- quality resources.
C.Here, 35 percent of the chimpanzees activity involved some sort of bipedalmovement, and once again, this behavior appeared to be linked to a clear attemptto carry as much as possible at one time.
D.XXXXXX
E.Researchers allowed the wild chimpanzees access to different combinationsof two different types of nut — the oil palm nut，which is naturally widelyavailable, and the coula nut, which is not.
F.The chimpanzees regarded the coula nuts as a more highly-prized resourceand competed for them more intensely.
答案】B
解析】
47.题干】_____
选项】
A.Standing on two legs allows them to carry much more at one time because itfrees up their hands.
B.But an international team of researchers, including Dr. Richmond from GW'sColumbian College of Arts and Sciences，have discovered that human walkingupright, may have originated millions of years ago as an adaptation to carryingscarce, high- quality resources.
C.Here, 35 percent of the chimpanzees activity involved some sort of bipedalmovement, and once again, this behavior appeared to be linked to a clear attemptto carry as much as possible at one time.
D.XXXXXX
E.Researchers allowed the wild chimpanzees access to different combinationsof two different types of nut — the oil palm nut，which is naturally widelyavailable, and the coula nut, which is not.
F.The chimpanzees regarded the coula nuts as a more highly-prized resourceand competed for them more intensely.
答案】A
解析】
48.题干】_____
选项】
A.Standing on two legs allows them to carry much more at one time because itfrees up their hands.
B.But an international team of researchers, including Dr. Richmond from GW'sColumbian College of Arts and Sciences，have discovered that human walkingupright, may have originated millions of years ago as an adaptation to carryingscarce, high- quality resources.
C.Here, 35 percent of the chimpanzees activity involved some sort of bipedalmovement, and once again, this behavior appeared to be linked to a clear attemptto carry as much as possible at one time.
D.XXXXXX
E.Researchers allowed the wild chimpanzees access to different combinationsof two different types of nut — the oil palm nut，which is naturally widelyavailable, and the coula nut, which is not.
F.The chimpanzees regarded the coula nuts as a more highly-prized resourceand competed for them more intensely.
答案】E
解析】
49.题干】_____
选项】
A.Standing on two legs allows them to carry much more at one time because itfrees up their hands.
B.But an international team of researchers, including Dr. Richmond from GW'sColumbian College of Arts and Sciences，have discovered that human walkingupright, may have originated millions of years ago as an adaptation to carryingscarce, high- quality resources.
C.Here, 35 percent of the chimpanzees activity involved some sort of bipedalmovement, and once again, this behavior appeared to be linked to a clear attemptto carry as much as possible at one time.
D.XXXXXX
E.Researchers allowed the wild chimpanzees access to different combinationsof two different types of nut — the oil palm nut，which is naturally widelyavailable, and the coula nut, which is not.
F.The chimpanzees regarded the coula nuts as a more highly-prized resourceand competed for them more intensely.
答案】F
解析】
50.题干】_____
选项】
A.Standing on two legs allows them to carry much more at one time because itfrees up their hands.
B.But an international team of researchers, including Dr. Richmond from GW'sColumbian College of Arts and Sciences，have discovered that human walkingupright, may have originated millions of years ago as an adaptation to carryingscarce, high- quality resources.
C.Here, 35 percent of the chimpanzees activity involved some sort of bipedalmovement, and once again, this behavior appeared to be linked to a clear attemptto carry as much as possible at one time.
D.XXXXXX
E.Researchers allowed the wild chimpanzees access to different combinationsof two different types of nut — the oil palm nut，which is naturally widelyavailable, and the coula nut, which is not.
F.The chimpanzees regarded the coula nuts as a more highly-prized resourceand competed for them more intensely.
答案】C
解析】
完形填空
CellPhone Lets Your Secrets Out
Your cell phone holds secrets about you.Besides the names and numbers thatyou've programmed into it, ______traces____(51) of your DNA linger (遗留) onthedevice according to a new study
DNA is genetic (遗传的)material _____that_____ (52) appears in every cell. Likeyour fingerprint, yourDNA is _____unique______ (53) to you——unless you have anidentical twin. Scientiststoday analyze DNA in blood, saliva (唾液), orhair left____behind_______ (54) at the scene of a crime. The results oftenhelp detectivesidentify ____criminals______ (55) and their victims. Your cellphone can revealmore about you ____than_____ (56) you might think.
Meghan J. McFadden, a scientist at McMasterUniversity in Hamilton, Ontario,heard about a crime in which the suspect bledonto a cell phone and later droppedthe____device_____ (57). This made herwonder whether traces of DNA lingered once