1.单选题- (共4题)
2.选择题- (共13题)
My name is Maggie.I am a 13-year-old Canadian girl. I live in Toronto. It's a very big city. I can speak English and French. I have classes from 8:00 a.m. to 2:40 p.m. I have lunch at school. Many girls love playing volleyball after school, but I like swimming. I have a big family, my father, my mother and two brothers. I think China is a great country. I want a Chinese pen pal.
Please sendemails to me if you want to be my pen pal. My email address is maggie13@yahoo.com.
My name is Maggie.I am a 13-year-old Canadian girl. I live in Toronto. It's a very big city. I can speak English and French. I have classes from 8:00 a.m. to 2:40 p.m. I have lunch at school. Many girls love playing volleyball after school, but I like swimming. I have a big family, my father, my mother and two brothers. I think China is a great country. I want a Chinese pen pal.
Please sendemails to me if you want to be my pen pal. My email address is maggie13@yahoo.com.
Johndidn't go to work on Sunday afternoon. He {#blank#}1{#/blank#} a horse.
Johndidn't go to work on Sunday afternoon. He {#blank#}1{#/blank#} a horse.
Johndidn't go to work on Sunday afternoon. He {#blank#}1{#/blank#} a horse.
如图1，MA1∥NA2，则∠A1+∠A2={#blank#}1{#/blank#} 度．
如图2，MA1∥NA3，则∠A1+∠A2+∠A3={#blank#}2{#/blank#} 度．
如图3，MA1∥NA4，则∠A1+∠A2+∠A3+∠A4={#blank#}3{#/blank#} 度．
如图4，MA1∥NA5，则∠A1+∠A2+∠A3+∠A4+∠A5={#blank#}4{#/blank#} 度．从上述结论中你发现了什么规律？
如图5，MA1∥NAn，则∠A1+∠A2+∠A3+…+∠An={#blank#}5{#/blank#} 度．
3.填空题- (共10题)
有人做了如下实验：将深色桦尺蠖和浅色桦尺蠖分别进行标记，然后放养于工业污染区。经过一段时间后，将所释放的尺蠖尽量回收，统计其数目，结果如下表。
| 地区 | 浅色桦尺蠖 | 深色桦尺蠖 | ||
| 释放数 | 回收数 | 释放数 | 回收数 | |
| 工业污染区 | 64 | 16 | 154 | 82 |
| 没有污染的 非工业区 | 393 | 154 | 406 | 19 |
⑵ 桦尺蠖的个体发育要经过卵、幼虫、蛹、成虫四个阶段，我们把这种发育过程叫做
发育。（2分）
⑶ 如果严厉禁止污染，工厂的排烟量大大减少。请你预测，浅色桦尺蠖数量会 。（填“增加”或“减少”，3分）
⑷ 桦尺蠖的幼虫对桦树的危害很大，但目前对它的防治仍然是以喷洒药剂毒杀为主。这种方法虽然有效，但往往会伤及其他昆虫和以这些昆虫为食的鸟类。这不利于保护___________的多样性。（3分）
-
【1】题量占比
单选题:(4道)
选择题:(13道)
填空题:(10道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：9
7星难题：0
8星难题：5
9星难题：0