真诚的希望各位朋友帮我解答下这两句英语

(1)a burst of activity associated with the laying of submarine cables soon confirmed the challenger's observation that many parts of the ocean were two to there miles deep
associated with the laying of submarine cables是修饰主语a burst of activity的，不是谓语，谓语是confirmed，所以没有冲突。
(2) From the shore line, out to disance which may be anywhere from a few miles to a few hundred miles, runs the gentle slope of the continental shelf, geologically part of the continents
呵，长句子要理解可以先找主干，比如说这里 From the shore line, out to distance runs the gentle slope of the continental shelf.
which may be anywhere from a few miles to a few hundred miles是说明从海岸线向远处延伸的区域， out to 就是向外

1.associated with 不是谓语，只是过去分词短语作定语修饰activity。这句话的主干是a burst of activity soon confirmed the challenger's observation 。
2。第二句话采用了倒装句。From the shore line放句首，即介词短语放句首。后面的句子要到装。原句可改为the gentle slope of the continental shelf，geologically part of the continents runs the gentle slope of the continental shelf。