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译林2003课标版《Grammar and usage： Overview of noun clauses》PPT课件优质课下载
evidence shows that sharks seldom attacks
human beings (M3 U 1)
③.In the second type,the shark pushes you with its nose to find out whether you are fit to be eaten.
(M3 U 1)
④.Indeed ,pigeons have been known to fly home
from as far away as 1,800 kilometres. That is why
pegions have been used since ancient times to
carry the news or even the mail. (M3 U 1)
⑤.Pigeons appear to have a compass inside.
How this compass works remains a mystery.
(M3 U 1)
⑥.The possibilty that pleasant smells might
reduce pain has recently been suggested by new
research. (M3 U 1)
⑦.Scientists are interested in whether the sense of
smell is related to pain. (M3 U 1)
⑧.One explanation is that womens sense of smell is
better developed than that of men. (M3 U 1)
⑨.Why pleasant smells do not reduce pain
in men remains a puzzle for scientists. (M3 U 1)
⑩.That is why English has so many difficult rules
that confuse people. (M3 U 2)
?.It is certain that this process will continue,
and people will keep inventing new words and new
ways of saying things. (M3 U 2)