Clinical evidence began to ______ suggesting that the new drugs had a wider range of useful effect than had been predicted from experiments in animals.
A．operate.B．strengthenC．a(chǎn)ccumulateD．a(chǎn)pprove
C
動(dòng)詞辨析。A操作；B加強(qiáng)；C積累，累積；D批準(zhǔn)，贊成；結(jié)合句意可知C正確。句意：臨床證據(jù)不斷的說(shuō)明這種新藥比之前在動(dòng)物身上的預(yù)測(cè)有更廣范圍的有用的影響。
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