A．effectiveB．importantC．efficientD．special

【C9】A．effectiveB．passiveC．relativeD．expressive

【C16】A．accessibleB．importantC．popularD．abundant

【C8】A．effectiveB．efficientC．affectionateD．moved

【C15】A．simpleB．importantC．funnyD．good

【C5】A．obviousB．importantC．intangibleD．explicit

【C16】A．effectiveB．substantialC．preliminaryD．contemporary