请教两个问题？？？

halcyon

70. A President entering the final two years of a second term is likely to be at a severe disadvantage and ^ often unable to carry out a legislative program.
a. likely to be at a severe disadvantage and is often unable to
b. likely severely disadvantaged and often unable to
c. liable to be severely disadvantaged and cannot often
d. liable that he or she is at a severe disadvantage and cannot often
e. at a severe disadvantage, often likely to be unable that he or she can
Choice A is best. Choice B lacks the necessary infinitive after likely. In B and C, disadvantaged, which often means "hampered by substandard economic and social conditions," is less precise than at a disadvantage. In C and D, cannot often carry out suggests that a President with limited time suffers only from an inability to achieve legislative goals frequently, not from a frequent inability to achieve them at all. In C, liable, followed by an infinitive, can legitimately be used to express probability with a bad outcome, but C is otherwise flawed as noted. D's liable and E's unable should be followed by an infinitive rather than by a relative clause beginning with that.

请问：...... but C is otherwise flawed as noted.  是什么意思？

82. In contrast to large steel plants that take iron ore through all the steps needed to produce several different kinds of steel, processing steel scrap into a specialized group of products has enabled small mills to put capital into new technology and remain economically viable.
a. processing steel scrap into a specialized group of products has enabled small mills to put capital into new technology and remain
b. processing steel scrap into a specialized group of products has enabled small mills to put capital into new technology, remaining
c. the processing of steel scrap into a specialized group of products has enabled small mills to put capital into new technology, remaining
d. small mills, by processing steel scrap into a specialized group of products, have been able to put capital into new technology and remain
e. small mills, by processing steel scrap into a specialized group of products, have been able to put capital into new technology and remained

请问：e 的 remained 为什么不可以认为是 have remained 省略了 have

halcyon

哪位帮助解答一下？？？

ca3ltoys

the key for the first question is the meaning of at a disadvantage--it precisely expresses what author want to say.

for the second question,also we should think it over by the sentence's meaning, here is telling a statement usually happen whenever, it's like telling a truth. therefore, "remain" should parallel to "put".