743.The exhibition of art from Nubians, the site of a Black civilization that goes back to the fourth millennium B.C., makes clear the Nubians combined artistic elements from Egypt to that of sub-Saharan Africa.

(A) the Nubians combined artistic elements from Egypt to that

(B) that the Nubians combined artistic elements from Egypt to that

(C) the Nubians combined artistic elements from Egypt with that

(D) that the Nubians combined artistic elements from Egypt with those（D）

(E) that Nubians combined artistic elements from Egypt and those

解释是写A) clear后少that

想请问为什么要用that

是因为make clear that是惯用语吗?还是其他什么原因呢?

我想这题主要考察两个方面：
1、combine with
2、elements用复数，所以要用those

另外，make在这里是及物动词，但是宾语很长，所以后置，需要引导词that

不是惯用语

根据强调的对象来,make clear the Nubians强调的是Nubians,而make clear that强调的是that后面整个概念

遇到类似的题,强调概念,理论,研究结果等等,肯定选that

不是惯用语，我认为这里的考点是：宾语从句的that不能省略，一定要有。

主句结构：The exhibition makes clear that……

就如同It is believed that……这里的that也不能省。