一、词汇选项。下面每个句子中均有1个词或短语划有底横线，请为每处划线部分确定1个意义最为接近的选项。

　　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

　　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