TheheightofthetideisaffectedbyallofthefollowingEXCEPT______.
A.thepositionofthesun
B.channelsintheseabottom
C.thedirectionofthewind
D.variationsinthecoastline
正确答案:B[解析]见第七行第二句话。

TheheightofthetideisaffectedbyallofthefollowingEXCEPT______.
A.thepositionofthesun
B.channelsintheseabottom
C.thedirectionofthewind
D.variationsinthecoastline
正确答案:B