When the Olympics finished, all the volunteers were invited to take part in a parade t
第2题
flinch is to make a sudden small backward movement when you are shocked by pain or afraid of sth.()
第3题
Why do experts say twins are more alike than clones would be?
A、They have at least shared the same environment within the mother.
B、They have the same genes.
C、They are usually raised in the same family.
D、They have the same interests.
第4题
Why would a clone not be identical to the "master copy"?
A、They are totally different persons.
B、The clone's cells, for example, would have energy-processing machinery that came from the egg, not from the person who was cloned.
C、They have different genetic source.
D、The clone’s cells can be productive.
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