1 these are their motives for doing it

　　a reasons

　　b excuses

　　c answers

　　d plans

　　2 the river widens considerably as it begins to turn west

　　a twists

　　b stretches

　　c broadens

　　d bends

　　3 henry cannot resist the lure of drugs.

　　a abuse

　　b flavor

　　c temptation

　　d consumption

　　4 these programmes are of immense value to old people.

　　a natural

　　b fatal采集者退散

　　c tiny

　　d enormous

　　5 a great deal has been done to remedy the situation

　　a maintain

　　b improve

　　c assess

　　d protect

　　6 john is collaborating with mary in writing an article

　　a cooperating

　　b competing

　　c combining

　　d arguing

　　7 he is determined to consolidate his power

　　a strengthen

　　b control

　　c abandon

　　d exercise

　　8 many scientists have been probing psychological problems

　　a solving

　　c settling

　　b exploring

　　d handling

　　9 hearing problems may be alleviated by changes in diet and exercise habits

　　a removed

　　b cured

　　c worsened

　　d relieved

　　10 and the cars are tested for defects before leaving the factory

　　a functions

　　c motions

　　b faults

　　d parts

　　11 the food is insufficient for three people.

　　a instant

　　b infinite

　　c inexpensive

　　d inadequate

　　12 thousands of people perished in the storm.

　　a died

　　b suffered

　　c floated

　　d scattered

　　13 but in the end he approved of our proposal

　　a undoubtedly

　　b certainly

　　c ultimately

　　d necessarily

　　14 for young children，getting dressed is a complicated business.

　　a strange

　　b complex

　　c personal

　　d funny

　　15 in britain and many other countries appraisal is now a tool of management.

　　a evaluation

　　b efficiency

　　c production

　　d publicity