右图是某群落中甲、乙两个种群的增长速率随时间变化的曲线，下列叙述不正确的是（  ）

书面表达 每年夏天，溺水事故频发。 请你就此写一篇短文谈谈你的看法。

内容包括：

1.我们应该如何防止此类事故发生？（两点建议）

2.如果看到有人落水，我们应该如何施救？

3.呼吁同学们热爱生命，注意安全。 

作文要求：1.不能照抄原文；不得在作文中提到出现的学校真实姓名。           

2.语句连贯，词数80个左右。作文的开头已经给出，不计入总词数，也不必抄写在答题卡上。 

Almost every year in summer, many people are reported dead from drowning accidents. How to prevent such sad accidents?

    Some people will do just about anything to save money．And I am one of them．Take my family's last vacation．It was my six­year­old son's winter break from school, and we were heading home from Fort Lauderdale after a week long trip．The flight was overbooked, and Delta, the airline, offered us $400 per person in credits to give up our seats and leave the next day．I had meetings in New York, so I had to get back．But that didn't mean my husband and my son couldn't stay．I took my nine­month­old and took off for home．

    The next day, my husband and son were offered more credits to take an even later flight．Yes, I encouraged — okay, ordered — them to wait it out at the airport, to “earn” more Delta Dollars．Our total take: $1,600．Not bad, huh?

    Now some people may think I'm a bad mother and not such a great wife either．But as a big­time bargain hunter, I know the value of a dollar．And these days, a good deal is something few of us can afford to pass up．

    I've made a living looking for the best deals and exposing（揭露）the worst tricks．I have been the consumer reporter of NBC's Today show for over a decade．I have written a couple of books including one titled Tricks of the Trade: A Consumer Survival Guide．And I really do what I believe in．

    I tell you this because there is no shame in getting your money's worth．I'm also tightfisted when it comes to shoes, clothes for my children, and expensive restaurants．But I wouldn't hesitate to spend on a good haircut．It keeps its shape longer, and it's the first thing people notice．And I will also spend on a classic piece of furniture．Quality lasts．

每个人人格的基本标志是（    ）