问题
选择题
________ excited Geoff Marcy most was ________ there were planets in other solar system where life might exist.
A．It; if
B．That; whether
C．What; whether
D．What; that
答案
答案：D
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________ excited Geoff Marcy most was ________ there were planets in other solar system where life might exist.
A．It; if
B．That; whether
C．What; whether
D．What; that
答案：D