【C18】A．suggestionB．propositionC．considerationD．presumption

【C18】A．onB．beforeC．atD．in

【C18】A．merelyB．alwaysC．mainlyD．almost

A．suggestionB．contextC．abstractD．information

【C18】A．thatB．whichC．whatD．／

The author uses the word "Or" in line 25 toA．criticize the previous suggestionB．provide un

A. suggestionB. explanationC. acceptanceD. discussion