问题 填空题 案例分析题

右图是一个白化病和红绿色盲病的家族遗传系谱(正常肤色基因为A,白化病基因为a,色觉正常基因为B,红绿色盲基因为b)。据图回答:

A、a和B、b的遗传遵循的规律是()

答案

参考答案:基因的自由组合定律

阅读理解

阅读理解。

    Listening test is one of the important parts of the English exam. Here are some tips for you.

    Before you start to listen, you need to relax. Don't be nervous. And try to read the questions. These

questions usually help you understand the dialogue or the passage.

    Then listen carefully to the first sentence. It usually tells you the main idea of the passage. When

you're listening, try to do some thinking and take some notes (笔记), such as:

    ·What happened?

    ·When, where, and how?

    ·What does the speaker want to tell us?

In this way, you may understand the passage better.

     Please remember not to think about one or two words for a long time. When you hear some words

you don't know, don't spend too much time on them. Very often, you'll find out what they mean later

when you go on with the listening.

1. This passage mainly talks about ______. [ ]

A. tips on listening

B. tips on speaking

C. tips on reading

D. tips on writing

2. It's better for you to keep ______ when you start to have a listening test. [ ]

A. excited

B. relaxed

C. nervous

D. worried

3. We should listen to the first sentence carefully, because it usually tells us            . [ ]

A. the answers to the questions

B. where to write the answers

C. the main idea of the passage

D. how much time left (剩余) for the listening test.

4. When you're listening, it's important for you to ______. [ ]

A. remember every word

B. take some notes

C. understand all the words

D. think about one words for a long time

5. The             usually help(s) us understand the passage better. [ ]

A. questions

B. first sentence

C. notes

D. A, B and C

选择题