1.       In potential food value, however, plankton far excel that of the land grasses.  In potential food value, however, plankton far outweighs that of the land grasses  Which sentences is better? Why? P129fficeffice" />

2.       While grasses produce  about 49 billion tons of valuable carbohydrates each year, the plakton generates more than twice as much .   While grasses produce  about 49 billion tons of valuable carbohydrates each year, the plakton generates more than twice of that.   Which is correct ? Why? P129

3.       What’s the differences between accent and dialect?  P135

4.       This means that while local elites , foreign communites and subsidiaries of transnational corporations may benefit, those who lives depend on access to the information are denied it.

What does access mean in this sentence? P173

About the question 1?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" />

 It seems that “excel”also have the meaning “better than others”,isn’t  it? If so , when it means “better than others”, what’s the differences between excel and outweight?

About question 3o:p>

  I’m sorry that maybe I looked up dictionary not carefully enough, so that I put up a question which is too simple. I will try my best not to this again.

About question 4o:p>

  I’m sorry again that I made a mistake , the correct one is o:p>

  This means that while local elites , foreign communites and subsidiaries of transnational corporations may benefit, those whose lives depend on access to the information are denied it.What does access mean in this sentence? P173

About question 2o:p>

  Why don’t you give the answer? Is the question too simple that you even don’t want to answer it? I’m afraid of thatJ