单项选择题

According to the author, where does the happiness of scientists lie

A．It lies in a sense of fulfillment.
B．It lies in their rich imagination.
C．It lies in the increase of their knowledge.
D．It lies in the opportunity to continue the search.

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单项选择题

In the author's opinion, why do we search the stars or moon

A．Because we have made up our mind to do so.
B．Because we want to fulfil our desire for knowledge.
C．Because we want to enjoy the ecstasy of achievement.
D．Because we cannot help ourselves.

单项选择题

What will the woman receive if she is chosen

A．A certificate signed by three professors.
B．A cash, award and a certificate.
C．A medal worth five hundred dollars.
D．An opportunity to interview for an excellent position.