以下哪个句子是描述原因的句型?()

以下哪个句子是描述原因的句型?()
A、The chief reason why …… is that ……
B、It is obvious / apparent/ clear/ conspicuous / without doubt that ……
C、A recent report indicates that ……
D、According to the statistics provided by ……, it can be seen that ……
【正确答案】:A
【题目解析】:考察句型应用,A选项The chief reason why …… is that …… ....的主要原因是... 是描述原因的句型,其余的是论证说明句型,故选A.