1.综合题- (共2题)

(1)父亲能产生______种精子,其基因组成是________。
(2)这对夫妇所生小孩患白化病的可能性为______,患白化病孩子的基因组成为______。
2.单选题- (共13题)
A.25% | B.50% | C.75% | D.100% |
A.变异具有普遍性 |
B.变异现象只表现在人与人之间 |
C.变异现象是不存在的 |
D.遗传现象具有普遍性 |
3.选择题- (共1题)
B
Do you like reading stories? Maybe you will answer, "No, I am not a child any more!" Yes, children all over the world always love stories.
Chinese children are 1 in Monkey King's story. It 2 a popular bedtime story in China for many years. In fact, adults also love the story a lot. For them, Monkey King has become a very 3 part in the memory of their childhood. The clever and humorous monkey 4 the hearts of many Chinese people. British boys and girls all know Alice's Adventures in Wonderland well. As the name shows, it's a story full of dangerous but exciting trips. Children 5, cry and even get frightened(害怕的) with Alice together while reading the story. Most American kids have read The Adventures of Tom Sawyer, by the famous 6, Mark Twain. Everyone likes the brave boy who also has lots of 7. Some scenes(场景) of the story may make your heart go faster, for Tom and his friends meet some very bad men and are usually 8. Of course in the end, they beat the bad ones.
You may also ask me 9 I like stories. Yes, I have liked them since I was very young. At that time, I often 10 all my pocket money on story books. For me, stories are much more delicious than chocolate! They help me learn a lot. So either young or old, let's enjoy stories.
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【1】题量占比
综合题:(2道)
单选题:(13道)
选择题:(1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:2
5星难题:0
6星难题:9
7星难题:0
8星难题:4
9星难题:0