题目

下图所示为“J”型增长曲线，过A点做A点的切线AB，并过A，B两点分别向X轴和Y轴作垂线，据图分析，下列叙述错误的是（） A . 图中曲线代表的种群无K值 B . BC/AC是种群在该时间段的增长率 C . OA段各点增长倍数相同 D . OA段各点增长速率逐渐增大 答案：B In the UK a trip to Laze quest is a popular way to celebrate a birthday．It's a game where you shoot（射击）your friends with toy guns．Kids hide in dark corners and hope to surprise them． Other people go bowling（打保龄球）and then have dinner at a nice restaurant．If it's your birthday you can choose whatever you want to eat and drink． Going to an amusement park for your birthday is popular too．Amusement parks have big rides like roller coasters（过山车）and ghost（鬼怪）trains．Parents often pay for their kids to bring some friends with them to the parks． If the weather is nice and you have enough space，you can have a garden party．People play games like blind man's bluff（欺骗）．One kid cannot see but has to try to catch the others by listening out for them．There's music at the party and sometimes a barbecue（烧烤野餐）． Kids will usually bring along gifts like CDs or books to the party．Parents will buy their child a big present，like a game console（电子游戏机）or a bike． 1．A kid can often do the following on his birthday except ________． A．playing a game                                           B．going bowling C．having a barbecue                                       D．buying presents for other children 2．From the third paragraph we know that ________． A．it's free for kids to go into the amusement parks to ride roller coasters and ghost trains B．it's free for adults to go into the amusement parks to ride roller coasters and ghost trains C．you should pay money to go into the amusement parks to ride roller coasters and ghost trains D．parents won't let their kid bring~ any friends to the parks on his birthday 3．The passage mainly tells us ________． A．the ways to celebrate a birthday in the UK B．how to celebrate a birthday in the US C．the ways of celebrating a birthday D．where to celebrate a birthday