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It would be completely irresponsible and unethical to use drugs on people that______(not test)thoroughly on animals.
People and animals are different ______their reactions to drugs and in the way ______their bodies work.A. in…whichB. in…thatC. by…whichD. from…that
28______A. chocolatesB. coinsC. tinsD. drugs
A. chocolates B. coins C. tins D. drugs
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