大全608

608. Researchers have questioned the use of costly and experimental diagnostic tests to identify food allergies, such as milk, that supposedly disrupt normal behavior.
(A) to identify food allergies, such as
(B) to identify food allergies, like
(C) to identify food allergies, such as to
(D) for identifying food allergies, like that of
(E) for identifying food allergies, such as for
选C，这里为什么要加to ?

608. Researchers have questioned the use of costly and experimental diagnostic tests to identify food allergies, such as milk, that supposedly disrupt normal behavior.
(A) to identify food allergies, such as
(B) to identify food allergies, like
(C) to identify food allergies, such as to
(D) for identifying food allergies, like that of
(E) for identifying food allergies, such as for

1,to identify food allergies修饰的是test还是the use? 是不是修饰test？

2，for identifying food allergies是不是也可以修饰test？

就是因为白大侠的书上的解释我觉得有问题。这里的不定式不是修饰动词的。