According to the periodic table still some elements undiscovered.A. there seem to beB. it

问题补充：

According to the periodic table,still some elements undiscovered.

A. there seem to be

B. it seems to be

C. it seems that

D. here seem

答案：

(答案→)A. there seem to be

B. it seems to be

C. it seems that

D. here seem

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