美国设计师:一道单选
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Franklin discovered______electricity,which was then regarded as______secret of nature.
A./,the B./,a
A or B??????Leave your explanation,please.
A./,the B./,a
A or B??????Leave your explanation,please.
B./,a
A.个人觉得,因为FRANKLIN的DISCOVERY本身就是SECRECT OF NATURE,所以后面应该用THE。
a,b
B
B