Advocates of transgenic crops claim that______.
A.these crops have no harm to the environment in their growing
B.food from these crops are healthier than from the conventional
C.these crops will certainly replace the conventional
D.these crops can greatly help to feed the world
or cell taken from an adult rather than from an embryo), then Polly, a transgenic animal produced through cloning.
A.A very popular food plant:
B.A plant with limited uses.
C.A food plant which has been thoroughly used.
D.A plant used as a main food on the Pacific Islands.