Though they met for the first time, they talked________they were good friends.[

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Though they met for the first time, they talked________they were good friends.[     ]
A. even if
B. as if
C. even though
D. if only

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举一反三

________ in health，he persisted in doing the experiment. [ ]

A．As he was poor
B．Poor as he was
C．Poor was he
D．Poor he was though

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I didn"t manage to do it ________ you had explained how.[      ]
A. until
B. unless
C. when
D. before

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The film is really wonderful.It"s such a long time ________ I enjoyed myself so much.[     ]
A. when
B. before
C. as
D. since

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As is known, ________we know some basic knowledge concerning AIDS, we can protect
ourselves from being infected.[      ]
A. as far as
B. if only
C. so long as
D. unless

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________ everyone else wouldn"t go to the mountain area, he went without a second thought. [     ]
A. As long as
B. While
C. Where
D. In spite of

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