Reading and vocabulary教学设计及教案分析

Vocabulary & reading Step1 Scannig:

Work in pairs and answer the questions. What is___?

1. DNA 2. a clone 3. a stem cell 4. the genetic make-up of a person or a plant

5. bacteria 6. an enzyme Step2 Read the passage again and find the paragraphs which describe: a. When the structure of DNA was discovered b. How to clone something c. four possible reasons for cloning d. the disadvantages of cloning Step3 Do the exercise in Activity5 on P65. Step4 Read the text again and decide whether the following statements are true (T) or false (F).

1.The science of genetics was discovered by two scientists, Watson and

Crick at Cambridge University.

(

) 2. Stem cells in embryos can help someone recover from a disease, repair

human tissue and so on .(

)

3. The child who was a clone of one of his parents would have

psychological pressure throughout his childhood.

(

) Step5 Words revision:

According to the definition, find the proper words.

1.thin enough to be seen through

2. A pattern of chemicals within the cell of a living thing that controls

what it is like

3. The same or exactly alike 4. Be likely to cause argument or disagreement 5. Can be chosen freely 6. Bad habit or personal quality 7. Can change or be changed to adapt to new needs

8. Put into force by orders or by the law 9. Useful or simple to use

10. The natural watery liquid produced in the mouth Step6 Language points:

1. A clone is an organism which is genetically identical to another one. 1) 同一的；同样的

We are identical in our views of what should be done.

我们双方对应当怎么办的看法是一致的。

This is the identical hotel that we stayed in last year.

这就是我们去年住过的那家旅馆。

2) (常与with连用) 完全相同的

These two designs are almost identical.

这两种式样几乎完全相同。

My opinion is identical with his.

我的意见和他的意见相同。

2. A prize cow which resist bacteria or disease, or to sow a cloned crop which can resist rot or pests.

1). 意为“抵抗；反抗；”。如：

The rebel army resisted the police.

叛军与警察对抗。

The laborers prepared to resist and to

overthrow this Government.

劳动人民准备反抗推翻这个政府。

2). 意为“抵御；阻止；抗；耐”。如：

For months the company has resisted changing its accounts system.

数月以来，这家公司阻止改变它的帐目。

This metal resists rust.

这种金属是防锈的。

3). 意为“经得住；不屈从”, 常用于否定句。如：

Jill couldn’t resist making jokes about his boldness.

吉尔忍不住拿他的秃顶开玩笑。

She couldn’t resist sweets.

她看到甜食就想吃。

[词汇拓展]

resistance n. （不可数）抵抗，对抗；反对, 抵抗力, 阻力

(与to连用) resistant adj. 抵抗的，有抵抗力的

The demonstrators offered little or no resistance to the police.

示威群众对警方没怎么抵抗。

Rebel gunmen have put an end to armed resistance.

叛军停止武装抵抗。

The seedlings are resistant to cold weather.

这些秧苗有抗寒力。