A. observation B.transportation C.advanced D.transfer

　　46.When I read the newspaper, I always read the _______ first.

　　A. headlines B.headquarters C.heaven D.horizon

　　47.They _______ our house at $10,000.

　　A. count B.vanish C.weave D.assess

　　48.When he studied at college, Jack was supported by a _______.

　　A. treatment B.assistance C.scholarship D.protein

　　49.Even as _______, he made several wonderful inventions.

　　A.a stock B.a representative C.an undergraduate D.a gulf

　　50.An emergency _______ is very important in case of fire.

　　A. exit B.deposit C.discharge D.elaborate