大全957与OG49

957      By law, a qualified physician can only prescribe medicine, protecting the public.

(A) By law, a qualified physician can only prescribe medicine, protecting the public.

(B) By law, only a qualified physician can prescribe medicine, protecting the public.

(C) By law, only a qualified physician can prescribe medicine which protects the public.

(D) In order to protect the public, by law a qualified physician only can prescribe medicine.（E）

(E) In order to protect the  public, by law only a qualified physician can prescribe medicine.

我选的B.记得ING在句末有表伴随结果的意思,为什么不对呢?

大全注释是B:prescribe medicine, 和protecting the public.伴随不能准确表达意思。不太懂

象B一样用分词代前面整个句子表结果的还有

49. The cameras of the Voyager II spacecraft detected six small, previously unseen moons circling Uranus, which doubles to twelve the number of satellites now known as orbiting the distant planet

(A)  which doubles to twelve the number of satellites now known as orbiting

(B)   doubling to twelve the number of satellites now known to orbit

(C)  which doubles to twelve the number of satellites now known in orbit around

(D)  doubling to twelve the number of satellites now known as orbiting

(E)   which doubles to twelve the number of satellites now known that orbit

The pronoun which should be used to refer to a previously mentioned noun, not to the idea expressed in an entire clause. In A, C, and E, which seems to refer to a vague concept invol­ving the detection of moons, but there is no specific noun, such as detection, to which it can refer. Also in E, the use of the phrasing the number... now known that orbit is ungrammatical and unclear. B and D use the correct participial form, doubling, to modify the preceding clause, but D, like A, uses known as orbiting rather than known to orbit, a phrase that is more idiomatic in context. B, therefore, is the best answer.

我想可能原句想表达的逻辑意思是“为了保护公众健康”，而ABC的protecting the public不论是做伴随动作或伴随结果都无法表达这层目的。

供参考。

请问only的位置是不是这样？

In order to protect the public, a qualified physician can prescribe medicine only by law 。