题目内容：

______useful information it is A How BWhat a CWhat an DWhat

优质解答

有两种感叹句的说法:
1.What useful information it is!
2.How useful the information is!
第一种说法因"信息"不可数,所以不能加冠词,类似的如
What bad weather it is!
如果可数要加a(an)
What a perfect person he is!
所以选D.