(单选题)
( ) is the center of our planetary system was a difficult concept to grasp in the Middle Ages.
A.It is the sun and not the earth
B.The sun and not the earth
C.Being the sun not the earth
D.That the sun and not the earth
参考答案:D
参考解析:
名词性从句。观察题干可知该题考察主语从句,主语从句是完整的陈述语序的句子,故由that引导,故本题正确答案选D。
知识点:名词性从句 英语 语法串讲(银保监不考) 金融业务 模考估分
