Ye Fuyuan comes from Sichuan, China. He lives with 1 father in a small room and Ye Fuyuan's father is disabled(残疾) and 2 work.

    Every morning, he 3 at twenty-five past six and makes breakfast. Then he4 his father get dressed and eat breakfast. After that, he has his breakfast 5. At seven o'clock, he 6 to school.

    At twelve, he runs back home from school, too. Then he 7 lunch for his father. Sometimes he likes to 8 a walk with his father. From nine twenty to eleven o'clock at 9, he looks 10 his father in bed. He only has 11 to do his homework 12 eleven o'clock.

    The life is 13 for the boy. But he studies hard and is 14 the top student in his grade. He wants to have a trip to London with his father 15 day.

图甲表示某生物种群出生率和死亡率的关系（①表示出生率，②表示死亡率），图乙表示该生物一段时间内种群增长速率变化的曲线，请回答下列问题：

（1）种群密度受多种因素的影响，直接影响该生物种群密度的因素除甲图中的因素外，还有____ ．

（2）根据甲图给出的信息，该生物的种群密度将会____ （填“增大”、“不变”或“减小”）．该生物种群在甲图所示时间内，数量增长模型为____ ，乙图中____ 时间段内种群数量的增长与此类似．

（3）若一段时间后，甲图中的①②发生重合，表明此时该生物种群数量达到____ 值，对应在乙图上的时间点为____ ．

（4）若该生物为某种经济鱼类，种群增长速率维持在乙图的____ 点可提供最大的持续产量．若甲图的①②分别代表同种生物的两个种群在相似生态系统中的增长率，这两个种群在各自生态系统的适应性高低可描述为____ ．

如果 $\frac{1}{3}$ x^a+2y³与﹣3x³y^2b﹣1是同类项，那么a，b的值分别是（   ）

①find ＋ 宾语 ＋名词：

We have found ____.我们发现他是一个好男孩。

②find ＋ 宾语 ＋ 形容词：

He found ____. 他发现这个房间很脏。

③find ＋ 宾语 ＋ 现在分词：

I found ____ at the door. 我发现她正站在门口。