62. Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth’s crust, changing the measured strain across a fault zone, and varying the electrical properties of underground rocks.
(A) changing the measured strain across a fault zone and varying
(B) changing measurements of the strain across a fault zone, and varying
(C) changing the strain as measured across a fault zone, and variations of
(D) changes in the measured strain across a fault zone, and variations in （correct）
(E) changes in measurements of the strain across a fault zone, and variations among
E的错误没看出来~
67. Congress is debating a bill requiring certain employers provide workers with unpaid leave so as to care for sick or newborn children.
(A) provide workers with unpaid leave so as to
(B) to provide workers with unpaid leave so as to
(C) provide workers with unpaid leave in order that they
(D) to provide workers with unpaid leave so that they can （correct）
(E) provide workers with unpaid leave and
B的so as to 错了吗？？我觉得在这里表示以至于没错啊，难道gmat里这个用法不对？
谢谢
67. Congress is debating a bill requiring certain employers provide workers with unpaid leave so as to care for sick or newborn children.
(A) provide workers with unpaid leave so as to
(B) to provide workers with unpaid leave so as to
(C) provide workers with unpaid leave in order that they
(D) to provide workers with unpaid leave so that they can
(E) provide workers with unpaid leave and
而且我觉得D的they有可能指代不明啊
changes in strain而不是changes in measurements
67.they的存在至少可能指代workers，而so as to 的逻辑主语是这个句子的主语congress，有歧义
我的理解是这样的。
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