题目内容
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:A
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题目内容
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