1.判断题- (共8题)
2.单选题- (共22题)
A. AA和Aa B. Aa和Aa C. Aa和aa D. Aa和AA
A.害虫为了适应环境,产生了具有抗药性的基因,并代代遗传积累形成的 |
B.害虫接触杀虫剂后,逐渐产生了抗药性 |
C.害虫中存在抗药的变异,杀虫剂对这种变异进行了选择 |
D.害虫通过增大繁殖能力,增加个体的数量 |

A.物种A比物种B简单、低等 | B.物种A比物种B复杂、高等 |
C.物种A出现在物种B之前 | D.物种A是由物种B进化而来 |
A.在越早形成的地层中,成为化石的生物越简单,越低等 |
B.在较晚形成的地层中,只有高等生物的化石,没有简单生物的化石 |
C.在最早形成的地层中也有大量的高等生物形成的化石 |
D.化石不能证明生物是由水生到陆生的进化过程 |
A.控制传染源 | B.保护易感者 | C.切断传播途径 | D.探究病毒结构 |
①烟内含激素,吸入后影响正常发育
②烟内含有害物质,吸入后对呼吸道有害
③烟内含致癌物质,吸入后会致癌
④烟内含抑制大脑活动的物质,吸入后会反应迟钝
A.①② | B.②③ | C.③④ | D.①④ |
3.选择题- (共2题)
Time is very important in our life. But it never had any importance in my life until I 1a watch from my father. It 2 me the importance of time in my life.
I got this gift on a gray-sky day. I had to go to the 3 to pick up (接)my uncle Ali. However,I forgot it 4 I was playing with my friends. Later I 5 my uncle, but I was late for him. He had to 6 a taxi to my father's house.
I got to my father's house 7. My father looked at me angrily. I said “Hi” to him and my 8 uncle. My father asked me to sit 9 him and gave me this watch which was a gift from 10. It was made of silver. Then he said,“Essa, did you have fun 11 your friends today? What you did was not very nice and you should be sorry for your 12 This watch will be a reminder(提醒物) for you. I hope today you have learned something 13 . ”
I learned a lesson from my father: respect (尊重) time and 14 be late. The watch is important to me, not because of its 15 but because of the lesson(教训) that I learned from it.
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【1】题量占比
判断题:(8道)
单选题:(22道)
选择题:(2道)
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【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:14
7星难题:0
8星难题:14
9星难题:2