Is__________ with these troubles in mind__________ the Royal Society called for the world’s governments to investigate geo-engineering as a “Plan B”?

A．it,that

B．that,it

C．that,what

D．what,that

字体组合设计分为单一词组的组合设计、（）的组合设计2种。

A.多词组

B.简单词组

C.复杂词组

D.英文词组