31.He drove very fast to _______ that red car.
    A. scatter B.overtake C.site D.sponsor
    32.Slides are sometimes called ________ film.
    A. whistle B.vigorous C.robot D.transparent
    33.Professor Smith _______the most important part in his paper.
    A. omitted B.disputed C.designed D.chased
    34.This knife is made of steel _______ and it can be used for a long time.
    A. mixed B.alloy C.champion D.grasp
    35.The theory of _______ was developed by Darwin and is now understood by nearly everybody in the world.
    A. determination B.distribution C.discipline D.evolution
    36.Mr. Green has recently been _______ to director of the president’s office.
    A. pushed B.purchased C.promoted D.promised
    37.We don’t think that his _______ ability has been well developed.
    A. possible B.potential C.underneath D.vital
    38.Our _______ talks promise a good future for our cooperation.
    A. interior B.insurance C.initial D.invisible
    39.The _______ can help people to see very small objects.
    A. metropolitan B.microphone C.microscope D.microwave
    40.Physically we feel comfortable. But _______, we suffer a lot.
    A. psychologically B.moderately C.naturally D.precisely
    41.Mary has a _______ view of our future. But nobody believes what she said.
    A. portable B.primary C.possession D.positive
    42.Nobody knows his _______ for helping us.
    A. motive B.motion C.mood D.moral
    43.Both sides agree to establish a _______ zone between the south and north.
    A. midst B.mild C.mention D.neutral
    44.This is a _______ moment for our research. We should be careful.
    A. critical B.belt C.conscience D.copper
    45.This textbook is for the _______ students, not for the beginners.
    A. observation B.transportation C.advanced D.transfer