In his book,he explains both ______ it means to be a scientist and ______ science works.
A.how; how | B.what; that |
C.what; how | D.how; that |
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In his book,he explains both ______ it means to be a scientist and ______ science works.
A.how; how | B.what; that |
C.what; how | D.how; that |