1) If chips _________ in our bodies at birth, it would be more difficult to steal our identities. a) would be implanted b) were implanted 2) If genetic engineering were prohibited,  a) our food would be much safer. b) our food will be much safer. 3) If human cloning were permitted,  a) we might have doubles walking around. b) we might had doubles walking around. 4) If effective cures for cancers were discovered,  a) millions of lives will have be saved. b) millions of lives would be saved. 5) If petroleum weren't used as the world's primary energy source,  a) the world economies will be changed. b) the world economies would be changed. 6) Remote surgeries would be more accepted  a) if the majority of surgeries were performed by robots. b) if the majority of surgeries would have been performed by robots. 7) Technology might be more widely accepted  a) if effective cancer-fighting drugs were developed through genetic engineering. b) if effective cancer-fighting drugs was developed through genetic engineering.

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