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【題目】The speech by our manager at the opening ceremony is strongly impressed ________ my memory.
A.to
B.over
C.by
D.on

A．were; it B．are; them

C．was; it D．is; them

A．be B．is C．am D．are

A．are not preserved

B．is not preserved

C．were preserved

D．have not been preserved

A. face-to-face B. face to face

C. hand-in-hand D. hand in hand

A．be based on B．base on

C．be basing on D．base at

【題目】In________third stage of the exploration, ________spacecraft was sent to collect the moon minerals.
A.the；/
B.a；the
C.the；the
D.a；/

【題目】I saw her for a moment but then ________ her in the crowd.
A.lost sight of
B.caught sight of
C.out of sight
D.at first sight

A．played B．acted C．behaved D．made

A．are used B．is used C．use D．used