【C18】A．detectibleB．reasonableC．relatableD．feasible

【C18】A．onB．beforeC．atD．in

【C18】A．merelyB．alwaysC．mainlyD．almost

【C18】A．illegalB．oddC．vainD．wrong

【C18】A．thatB．whichC．whatD．／

【C15】A．minorB．reasonableC．majorD．unusual

【B5】A．welcomedB．reasonableC．expectedD．common