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China is a land of bicycles. At least it was back in 1992 when I traveled the country. Back then everyone seemed to be riding a bicycle. Millions of them, all black. Cars were rare. Yet since my arrival in Beijing last year, I’ve found the opposite is true. There are millions of cars. However, people still use their bicycles to get around. For many, it’s the easiest and cheapest way to travel today. Bicycles also come in different colors---silver, green, red, blue, yellow, whatever you want.        It’s fun watching people biking. They rush quickly through crossroads, move s下列关于甲、乙、丙三幅图说法错误的是（　　） A、甲图表示温度对绿色植物代谢的影响，光照相同时间，约在26℃条件下植物积累的有机物量最多B、甲图表示温度对绿色植物代谢的影响，温度为20℃时，每天光照10小时，植物不能生长C、若乙图表示种子萌发过程中有关植物激素的变化情况，据图可知赤霉素与细胞分裂素对种子的萌发有促进作用，而脱落酸会抑制种子的萌发D、若丙图表示老鼠种群数量增长曲线，若在d点之后通过硬化地面、将生活垃圾无害化处理等措施将使K下降