题目

如图甲是某种初级消费者被引入某岛屿后的种群数量变化趋势；图乙是该种生物在某调查阶段种群数量变化的λ值随时间的变化曲线．据图判断下列说法，错误的是（ ）A．分析图甲可知，该岛屿上该种生物的环境容纳量（K值）约为2000只B．种内斗争加剧和天敌的增多可能是1850～1865年间该种生物的种群数量急剧减少的原因C．分析图乙可知，该调查阶段中种群数量最多的年份是第10年时D．图乙第15年时种群数量最少，可相当于图甲1880年的种群数量情况 阅读表达（共5小题；每小题2分，满分10分）阅读下面短文并回答问题，然后将答案写到答题卡相应的位置上。请注意词数要求。Bikes are popular in the Dutch（荷兰）. In fact, nearly half of all travel in the Dutch is by bike. Now, one Dutch bike designer（设计师）, Thomas, has taken the country’s interest in bikes by making a school bus bike.The big bike has eight sets of pedals (踏板) for kids, a driver seat for an adult, and three other seats, comfortably letting little kids for their trip to and from school. The bike even has a motor, which can help with high hills or at times when few kids on it.So far, Thomas tells Fast Company, he’s sold 25 school-hikes, at a price of $ 25,000 each—less than it would cost to buy a traditional school bus with the same number of seats. Along with the traditional color, the bikes are colored yellow so that they can be seen easily.Thomas says he’s sold school bus bikes to neighboring countries such as Belgium. Englandand Germany, but so far, the school bus bike hasn't been sold in the United States. If the U.S. agrees to buy this kind of school bus bike, it could do a lot of good to improve exercise for a young age and help them keep healthy.1.How do people in the Dutch usually go to work?（no more than 2 words）2.How many seats does the school bus bike have?(no more than 1 word)3. Why are the school buses yellow in the Dutch ? (no more 6 words)4.Which country hasn’t bought a school bus bike?(no more than 3 words)5. If the U·S agrees to buy this kind of school bus bike?It can help people (no more 2 words)