A robot can be used to expand our frontiers when ________.

A robot can be used to expand our frontiers when ________.A. its intelligence an

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It's about two hour's (fly) __________ from Xi’an to Beijing

It's about two hour's (fly) __________ from Xi’an to Beijing.

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How were the crew rescued eventually?

How were the crew rescued eventually?A. By helicopte B. By boa C. By radio conta

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__________, the negotiation went further on.

__________, the negotiation went further on.A. With the first point agreeing on

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Why do nearsighted people wear glasses?In order to see _____

Why do nearsighted people wear glasses?In order to see __________.

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