请教三题

1.by 1872 the United States had 70 engineering colleges, ________ surprising expansion credited largely to the Morrill Act of 1862.

a.because   b.an        c.to which     d.was

2.by paying attention to the interesting,________ the significant, the penny press newspapers of the 1830's helped to change the concept of news.

a.which does not necessarily          b.not necessarily

c.was not necessarily                    d.not necessarily being

3.human beings do not constitute the only species endowed with intelligence: the

higher animals also have considerably problem-solving abilities.

第一题,我觉得没有一个完全正确,书的答案是b,不解

第二题,如果a选项是which is not necessarily可否选,正确答案是b

第三题,considerably改为considerable,它是否修饰abilities.

1.by 1872 the United States had 70 engineering colleges, ________ surprising expansion credited largely to the Morrill Act of 1862.

a.because   b.an        c.to which     d.was

are you  sure b is  " an "   ? in  my opinion  maybe  "a "

by 1872 the United States had 70 engineering colleges, "a "surprising expansion which is (credited largely to the Morrill Act of 1862.)

名词短语。。。sth be   credited  to sth .....归功于......

2.by paying attention to the interesting,________ the significant, the penny press newspapers of the 1830's helped to change the concept of news.

a.which does not necessarily          b.not necessarily

c.was not necessarily                    d.not necessarily being

3.human be

第二题,如果a选项是which is not necessarily可否选,正确答案是b

如果a选项是which is not necessarily可否选  不可以

ings do not constitute the only species endowed with intelligence: the

higher animals also have considerably problem-solving abilities.

第一题,我觉得没有一个完全正确,书的答案是b,不解

第三题,considerably改为considerable,它是否修饰abilities.

是的  这里你记住 considerably 如修饰adj时 一般只修饰表程度的adj

第二题还是不明白

by paying attention to the interesting,not necessarily (pay attention to ) the significant, the penny press newspapers of the 1830's helped to change the concept of news. 这里不可能是定语从句

我到认为是定语从局的省略. ( which is) necessarily the significant

第三题,比较级higher(而且后面没有范围限定.)前为什么加the?

第一题真的不能选an surprising expansion 是不是啊?

原因是否为不定冠词要跟紧接后面的词,这里是surprising ,所以只能用a,

而不是跟后面的expansion,要不然就用an了

怎么无人答我的啊

怎么无人答我的啊