The expression “ups and downs” in line 23 is closest in meaning to A. takeoffs and landings B. floors and ceilings C. highs and lows D. tops and bottomsĐoạn văn46/79The expression “ups and downs” in line 23 is closest in meaning totakeoffs and landingsfloors and ceilingshighs and lowstops and bottomsGiải thíchĐáp án: C