Whatever our differences as human beings are, we all think we’re more like the rest of the animal world than we realize. It is said that we share 40 percent of our genetic (遗传的) structure with the simple worm.
But that fact has helped Sir John Sulston win the 2002 Nobel Prize for Medicine. Sir John is the founder of the Sanger Institute in Cambridge, which was set up in 1992 to get further understanding of the human genome (染色体组).
To help them do this, they turned to the worm. The nematode (线虫类的) worm is one of the earliest creatures on planet earth. It is less than one millimeter long, completely transparent and spends its entire life digging holes through sand. But it still has lots to say about human life, and
what can be done to make it better.
What the worm told Sir John and his colleagues was that each of cells in the human body is programmed like a computer. They grow, develop and die according to a set of instructions that are coded i
A. found that human beings are similar to the worm
B. got the fact we share 40 percent of our genetic structure with the simple worm
C. found the computer which controls each of the cells in the human body
D. proved that cell death is programmed
Human beings are animals. We breathe, eat and digest, and reproduce the same life (1) common to all animals. In a biological laboratory, rats, monkeys, and humans seem very much the same.
However, biological understanding is not enough: (2) itself, it can never tell us what human beings are. (3) to our physical equipment--the naked human body--we are not an (4) animal. We are tropical creatures, (5) hairless and sensitive to cold. We are not fast and have neither claws nor sharp teeth to defend ourselves.We need a lot of food but have almost no physical equipment to help us get it. In the purely physical (6) , our species seems a poor (7) for survival.
But we have survived--survived and multiplied and (8) the earth. Some day we will have a (9) living on the moon, a place with neither air nor water and with temperatures that mm gases into solids. How can we have done all these things. Part of the answer
A. add up
B. break up
C. make up
D. cut up
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