1.(Importance) as foods, (carbohydrates) supply energy and (are) used (to make) fats.(A) 2. It (is said) that no potential frontier has (such) fired the imagination or challenged the (ingenuity) of humankind as (has) space.(B) 3.The major (component) of the sedimentary rock called shale is clay, an (earthy), fine-grained material consisting (primary) of a (particular) group of crystalline minerals.(C ) 4.At the time of Columbus' voyages, Native Americans used an astounding diversity of languages, _________the diversity used by Europeans.(D) A. the greatest by far B. by far than greater C.by far the greatest D. greater by far than 第一题的importance 错在哪里呢? 第2题,本人觉的最后一个好象有问题 要改成as space has 为什么 such 错,是不是要改成so 呢? 第3题,虽然知道错了,但不知道怎么改?是不是直接把primary去掉呢? 第4题,很迷糊不知道怎么分析!~干嘛要用个by 呢? 小弟很迷糊,有哪位大虾请指点一下迷津!!~谢谢!~ |