21.The well��equipped swimming pool is the favorite____ of the boys in summer.

　　A.residence

　　B.site

　　C.haunt

　　D.hotel

　　22.Don’t mention the failure in Mary’s ____or she will go crazy.

　　A.distance

　　B.hearing

　　C.range

　　D.neighborhood

　　23.The professor had to explain the profound theory in a/an ____language because of the audience’s poor knowledge in this field.

　　A.luminous

　　B.abstract

　　C.dull

　　D.theoretical

　　24.The Forbidden City, known as the former ____palace, is still kept intact at the center of the metropolis.

　　A.emperor

　　B.imperial

　　C.feudal

　　D.ancient

　　25.The driver no longer____ himself in drinking after experiencing that accident.

　　A.indulged

　　B.devoted

　　C.immersed

　　D.induced

　　26.Since the complex moved away, this town has only a ____ of its former population.

　　A.remain

　　B.remainder

　　C.majority

　　D.remnant

　　27.Malnutrition(营养不良) and hard work____ her health and she looked thin and pale.

　　A.promoted

　　B.impaired

　　C.accelerated

　　D.smashed

　　28.Some people like to____ the old systems and traditions; others like to preserve them.

　　A.innovate

　　B.persist

　　C.insist

　　D.adhere

　　29.He gave us ____ consent to take the apples for he smiled when he saw us do it.

　　A.explicit

　　B.implicit

　　C.ambiguous

　　D.negative

　　30.I expected her to do well in the final examination, but she has been��____�� by her illness.

　　A.caught

　　B.fascinated

　　C.discouraged

　　D.handicapped