Because they had expected the spacecraft Voyager 2 to be able to

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Because they had expected the spacecraft Voyager 2 to be able to gather data only about the planets Jupiter and Saturn, scientists were _____ the wealth of information it sent back from Neptune twelve years after leaving Earth.

A、anxious for
B、confident in
C、thrilled about
D、keen on
E、elated by
F、eager for

答案：C,E

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