大全SEC1-10的答案与OG有冲突啊

大全1-10

10.   Climatic shifts are so gradual as to be indistinguishable at first from ordinary fluctuations in the weather.

(A) so gradual as to be indistinguishable

(B) so gradual they can be indistinguishable

(C) so gradual that they are unable to be distinguished

(D) gradual enough not to be distinguishable（A）

(E) gradual enough so that one cannot distinguish them

OG黄本33

33。Although schistosomiasis is not often fatal, it is so debilitating that it has become an economic drain on many developing countries.

A ,it is so debilitating that it has become an economic

B, it is of such debilitation, it has become an economical

C, so debilitating is it as to become an economic

D, such is its debilitation, it becomes an economical

E, there is so much debilitation that it has become an economical

答案A

书中对C的错误是这样说的“The construction so x as to y is not a correct idiom."

可大全1-10 不就是so x as to y吗？ 答案A 是不是错了，应为C呢？请NN指教。

对哦,这道题该怎样解释呢? 有NN愿意说说吗？多谢拉

并不是看到so as to 就是错的。

请看OG的其它例子：

so as to 作为错误选项：

67. Congress is debating a bill requiring certain employers provide workers with unpaid leave so as to care for sick or newbom 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

Choices A, C, and E are ungrammatical because, in this context, requiring ... employers must be followed by an infinitive. These options display additional faults: in A, so as to fails to specify that the workers receiving the leave will be the people caring for the infants and children; in order that they, as used in C, is imprecise and unidiomatic; and E says that the bill being debated would require the employers themselves to care for the children. Choice B offers the correct infinitive, to provide, but contains the faulty so as to. Choice D is best.

但是也有 so ... as to 作为正确选项的。

88. The Emperor Augustus, it appears, commissioned an idealized sculpture portrait, the features of which are so unrealistic as to constitute what one scholar calls an "artificial face."

(A)  so unrealistic as to constitute

(B)  so unrealistic they constituted

(C)  so unrealistic that they have constituted

(D)  unrealistic enough so that they constitute

(E)  unrealistic enough so as to constitute

The verbs are and calls indicate that the sculpture is being viewed and judged in the present. Thus, neither the past tense verb constituted (in B) nor the present perfect verb have constituted (in C) is correct; both suggest that the statue's features once constituted an artificial face but no longer do so. Also, B would be better if that were inserted after so unrealistic, although the omission of that is not ungrammatical. Choices D and E use unidiomatic construc­tions with enough: unrealistic enough to constitute would be idiomatic, but the use of enough is imprecise and awkward in this context. Choice A, which uses the clear, concise, and idiomatic construction so unrealistic as to constitute, is best.