1.综合题- (共2题)

(1)图中①是指________,表面有许多肉眼看不到的气孔。
(2)图中②是指______,起固定卵黄的功能。
(3)图中卵细胞包括⑨_____、③______、④_______。
(4)图中⑤是指______,为胚胎发育提供________和________。
(5)图中⑦是指_______,为胚胎发育提供__________。
(6)③上有一个白色的小点,这是______,是进行________的部位。

⑴请把上述图片的序号按正确顺序排列起来____________________。
⑵在转基因鼠研究中,被研究的性状是________________,一胎所生的超级鼠的体型大,而普通鼠的体型小,这是一对__________________,控制这个性状的基因是________________。
⑶在生物代代繁衍的过程中,传下去的是_____________(基因/性状),而不是__________(基因/性状)。
⑷性状和基因的关系是____________________________。
2.单选题- (共12题)
A.成体在水中用鳃呼吸,在陆地上用肺呼吸 |
B.成体既能在水中生活,又能在陆地上生活 |
C.幼体用鳃呼吸,成体一般用肺呼吸,皮肤辅助呼吸 |
D.幼体生活在水中,成体生活在陆地上,用肺呼吸 |
A.卵产下之后才受精的,通常是在亲鸟孵卵时进行 |
B.未受精的卵,胚盘色浅而小 |
C.未受精的卵是不能孵化出小鸡的 |
D.已受精的卵,胚盘色浓而略大,这是因为胚胎发育已经开始 |
3.选择题- (共17题)
Facebook is a famous website. It is 1 among young students, especially (尤其是) college students. They can 2 find friends or send photos on the website. They can have lots of fun when they visit Facebook. In all, Facebook is 3 more famous and it has more users.
According to a US newspaper, Facebook may soon 4children under 13 to visit the site. They can visit the website 5 they are staying with their parents.
At the moment, children under 13 are not allowed to visit Facebook. There are some 6. One of them is about strangers. Sometimes strangers may be bad people. If bad people know the children's names, addresses and much personal 7, the children may be 8danger.
But more and more children want to visit Facebook. The company wants to find some ways to keep children 9 when they visit Facebook. For example, their accounts can be linked with (与……相联系) their parents. Parents can 10 their children's friends easily. They may even check their children's chat messages.
Each morning a rich man found a poor man sitting on a bench(长凳) in the park. The poor man always sat there, looking at the big hotel in which the rich man lived. One day, the rich man got out of his car and said to the poor man, "Excuse me. I want to know why you sit here and look at my hotel every morning." "Sir," said the poor man, "I am a failure. I have no money, no family, no home. I sleep on this bench, and every night I dream that one day I'll sleep in that hotel." The rich man said, "Tonight your dream will come true. I'll pay for the best room in that hotel for you a whole month."
A few days after, the rich man went into the poor man's room to ask him how he was enjoying himself. To his surprise, he found that the man had moved out of the hotel back to his bench. When the rich man asked why, he said, "You see, when I'm sleeping on my bench, I dreamed I am there, in the big hotel. It's a wonderful dream. But when I was there I dreamed I was back to this cold bench. It was a terrible dream, and I couldn't get any sleep at all."
4.填空题- (共6题)
-
【1】题量占比
综合题:(2道)
单选题:(12道)
选择题:(17道)
填空题:(6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:2
7星难题:0
8星难题:18
9星难题:0