B) not enough educators have realized the necessity for doing so
C) school districts are responsible for making their own decisions
D) many schoolteachers challenge the acceptability of these standards.
Passage Four
Questions 36 to 40 are based on the following passage.
ve never met a human worth cloning, says cloning expert Mark Westhusin from his lab at Texas A M University. Its a stupid endeavor. Thats an interesting choice of adjective, coming from a man who has spent millions of dollars trying to clone a 13-year-old dog named Missy. So far, he and his team have not succeeded, though they have cloned two cows and expect to clone a cat soon. They just might succeed in cloning Missy this spring - or perhaps not for another 5 years. It seems the reproductive system of mans best friend is one of the mysteries of modern science.
Westhusins experience with cloning animals leaves him upset by all this talk of human cloning. In three years of work on the Missy project, using hundreds upon hundreds of dogs eggs, the A M team has produced only a dozen or so embryos carrying Missys DNA. None have survived the transfer to a surrogate mother. The wastage of eggs and the many spontaneously aborted fetuses may be acceptable when youre dealing with cats or bulls, he argues, but not with humans. Cloning is incredibly inefficient, and also dangerous, he says.
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