【单选题】某种细菌繁殖的速率与细菌数目成正比(视细菌为连续变化的,计算时以四舍五入计),如果经 2 小时,细菌为原来的两倍,问经过多少小时,细菌为原来的三倍?
【简答题】The phrase “puts it down to” (Line 1, Para. 3) is closest in meaning to “________”. A) attributes it to B) finds it a reason for C) sums it up as D) compares it to
【简答题】The word “pinpoint” (Para. 1, Line 3) basically means ________. A) appreciate B) obtain C) interpret D) identify
【单选题】若一个类的构造函数为Node(inta,intb){x=a;y=x*b;},则执行语句Nodex(5,6);后,对象x的成员x和y的值分别是()。
【单选题】The word 'submissiveness' in Para. 1, sentence 3 is closest in meaning to______.