[求助]00-10-26/28 不解

26．Among the symptoms of measles, which takes about twelve days to incubate, are a high

        A                                                 B          C

fever, swelling of glands in the neck, a cough, and sensitive to light.

                                            D

答案:C

28．Photograph was revolutionized in 1851 by the introduction of the collodion process

       A                               B              C

for making glass negatives.

    D

答案:A

26. 注意among结构，是状语，后面的为主语，谓语和最接近的主语在保持一致。

28， 照相技术，应用的是集合名词：photography

是将 "are" 该成"they are" 吗?

我在做题时候考虑的是将"Among" 去掉,所以没有想到"are"其实也是可以改的.

再求问一题:01-01-13

In geometry, an ellipse may be defined as the locus of all points____distances from two fixed points is constant.

a.which as the sum of

b.of the sum which

c.whose sum of whose

d.whose sum that the

26, are->is

   这里是数错了，主语最靠近的-a high fever, 单数

     不能改成：they are

010113

你的题目答案错了：

13. In geometry, an ellipse may be defined as the locus of all points -------distances from two fixed points is constant.

(A) which as the sum of

(B) of the sum which

(C) the sum of whose

(D) whose sum that the

答案：C