cloning-where is it leading us模块八第二单元阅读
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Para 2. Cloning has two major uses. Para 3. The birth and death of Dolly. Para 4. The effect of Dolly. Para 5. It is forbidden to clone human
beings.
II. Read the text carefully and fill in the blanks.
3. What benefits can humans gain from cloning? 1) Medical cloning can help cure serious illnesses that ruin one’s quality of life (such as Parkinson’s disease帕金森症 or Alzheimer’s disease老年痴呆症). 2) It can help infertile people have babies.
3. The cloning of Dolly the sheep succeeded because ____. A. its easier to clone a sheep than other animals B. the scientists were determined and worked hard with patience C. the scientists were rewarded and got lots of money D. many other attempts to clone mammals failed
medical aid. C. A woman would have difficulty
recognizing her real husband. D. Men will die out because a woman can
the length of the life of the _o_r_ig_i_n_a_l sheep, because of serious illnesses which were more appropriate to a _m__u_c_h_o_l_d_e_r_a_n_i_m__a_l _.
Questions about cloning:
1. What is a clone? A clone is an animal or plant produced naturally or artificially from the cells of another animal or plant and is exactly the same as it.
plants. ● It is valuable for research on new plant species and for _m_e_d_i_c_a_l research on animals.
About ◆ Encouraging news: Dolly Dolly seemed to develop n__o_rm__a_l_ly_. the ◆ Disturbing news: Dolly lived sheep only six and a half years, half
2. How is a clone produced? The cloning of plants is simple and relatively easy. It can be done by taking cuttings (man-made cloning) or letting the plant produce its own runners (natural cloning). The cloning of animals is more complicated. It was not achieved until 1996 and is fully explained in the first reading.
4. What problems may arise when humans are cloned?
1) People may want to clone themselves so they can live forever.
2) People may want to clone dead children.
人教课标版 高二 选修 8 Unit 2
In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-made. Think about how they differ.
6. It can be inferred from the passage that a cloned animal ___________.
A. usually lives as long as the original one B.B. usually lives longer than the original
4. The lamb is the clone of the cell from sheep B because _____. A. it provides the egg cell B. it gives birth to the lamb C. it provides the nucleus D. it is a female sheep
3) People may want to clone their favorite pets.
Comprehending
I. Read through the passage and find the main idea of each paragraph.
Para 1. Cloning is a way of making an exact copy of another animal and plant.
Definition Cloning is a way of making _a_n_e_x_a_c_t_c_o_p_y_ of another animal and plant.
Major uses ● Gardeners use it top_r_o_d_u_c_e of cloning commercial quantities of
What do you know about twins?
There are twins of the same sex and those of different sexes. The twins here are identical in sex and appearance and are good examples of natural clones. They carry the same genetic information. The fertilized egg has split into two while inside the mother, and so produced two identical human babies.
Dolly the sheep
It’s the most famous sheep in the world. Do you know how Dolly is different from other sheep?
She was cloned while the others were born naturally. It is the copy of another sheep.
Different ◆ Evil leaders hoped to clone
opinions t_h_e_m_s_e_lv_e_s_ to attain their
on
ambitions.
cloning ◆ Religious leaders raised
_m__o_ra_lquestions.
cloning could provide.
III. Choose the best answer after reading the passage again.
1. The main idea of the text is ____ A. animal cloning is very valuable and can benefit the world. B. animal cloning could be misused by bad people so it must be forbidden C. animal cloning is well developed because Dolly the sheep was born. D. animal cloning raised arguments and scientists are not sure about its future.
What can you see in the picture?
I can see a strawberry plant producing runners in a natural form of cloning.
Who cut the stem off the plant?
A gardener. And the gardener is going to put it into a pot to produce another plant. He is actually making a copy of the plant.
◆ Some governmentsf_o_rb__a_d_e_
research into human cloning
but other countries like
来自百度文库
China and the UK, continued
to accumulate e_v_i_d_e_n_c_e of the
abundant medical aid that
one C. usually dies earlier than the original one D. is usually as healthy as the original one
7. Which of the following is wrong? A. Cloned people would live forever. B. Cloned people may be killed at will for
细枝末节
2. ________ is used in the procedure for cloning Dolly the sheep. A. The nucleus of Sheep A B. The somatic cell of Sheep A C. The nucleus of Sheep B D. The embryo of Sheep C
Are the following clones the same? If not, what is the difference?
NO. The first two are man-made clones.
The rest two are natural clones.
Pre-reading
5. Dolly the sheep _________________. A. looked exactly like the sheep that
provides the egg B. was the exact copy of the sheep that
provides the nucleus C. looked like the sheep that gave birth to it D. had the characteristics of all three sheep
beings.
II. Read the text carefully and fill in the blanks.
3. What benefits can humans gain from cloning? 1) Medical cloning can help cure serious illnesses that ruin one’s quality of life (such as Parkinson’s disease帕金森症 or Alzheimer’s disease老年痴呆症). 2) It can help infertile people have babies.
3. The cloning of Dolly the sheep succeeded because ____. A. its easier to clone a sheep than other animals B. the scientists were determined and worked hard with patience C. the scientists were rewarded and got lots of money D. many other attempts to clone mammals failed
medical aid. C. A woman would have difficulty
recognizing her real husband. D. Men will die out because a woman can
the length of the life of the _o_r_ig_i_n_a_l sheep, because of serious illnesses which were more appropriate to a _m__u_c_h_o_l_d_e_r_a_n_i_m__a_l _.
Questions about cloning:
1. What is a clone? A clone is an animal or plant produced naturally or artificially from the cells of another animal or plant and is exactly the same as it.
plants. ● It is valuable for research on new plant species and for _m_e_d_i_c_a_l research on animals.
About ◆ Encouraging news: Dolly Dolly seemed to develop n__o_rm__a_l_ly_. the ◆ Disturbing news: Dolly lived sheep only six and a half years, half
2. How is a clone produced? The cloning of plants is simple and relatively easy. It can be done by taking cuttings (man-made cloning) or letting the plant produce its own runners (natural cloning). The cloning of animals is more complicated. It was not achieved until 1996 and is fully explained in the first reading.
4. What problems may arise when humans are cloned?
1) People may want to clone themselves so they can live forever.
2) People may want to clone dead children.
人教课标版 高二 选修 8 Unit 2
In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-made. Think about how they differ.
6. It can be inferred from the passage that a cloned animal ___________.
A. usually lives as long as the original one B.B. usually lives longer than the original
4. The lamb is the clone of the cell from sheep B because _____. A. it provides the egg cell B. it gives birth to the lamb C. it provides the nucleus D. it is a female sheep
3) People may want to clone their favorite pets.
Comprehending
I. Read through the passage and find the main idea of each paragraph.
Para 1. Cloning is a way of making an exact copy of another animal and plant.
Definition Cloning is a way of making _a_n_e_x_a_c_t_c_o_p_y_ of another animal and plant.
Major uses ● Gardeners use it top_r_o_d_u_c_e of cloning commercial quantities of
What do you know about twins?
There are twins of the same sex and those of different sexes. The twins here are identical in sex and appearance and are good examples of natural clones. They carry the same genetic information. The fertilized egg has split into two while inside the mother, and so produced two identical human babies.
Dolly the sheep
It’s the most famous sheep in the world. Do you know how Dolly is different from other sheep?
She was cloned while the others were born naturally. It is the copy of another sheep.
Different ◆ Evil leaders hoped to clone
opinions t_h_e_m_s_e_lv_e_s_ to attain their
on
ambitions.
cloning ◆ Religious leaders raised
_m__o_ra_lquestions.
cloning could provide.
III. Choose the best answer after reading the passage again.
1. The main idea of the text is ____ A. animal cloning is very valuable and can benefit the world. B. animal cloning could be misused by bad people so it must be forbidden C. animal cloning is well developed because Dolly the sheep was born. D. animal cloning raised arguments and scientists are not sure about its future.
What can you see in the picture?
I can see a strawberry plant producing runners in a natural form of cloning.
Who cut the stem off the plant?
A gardener. And the gardener is going to put it into a pot to produce another plant. He is actually making a copy of the plant.
◆ Some governmentsf_o_rb__a_d_e_
research into human cloning
but other countries like
来自百度文库
China and the UK, continued
to accumulate e_v_i_d_e_n_c_e of the
abundant medical aid that
one C. usually dies earlier than the original one D. is usually as healthy as the original one
7. Which of the following is wrong? A. Cloned people would live forever. B. Cloned people may be killed at will for
细枝末节
2. ________ is used in the procedure for cloning Dolly the sheep. A. The nucleus of Sheep A B. The somatic cell of Sheep A C. The nucleus of Sheep B D. The embryo of Sheep C
Are the following clones the same? If not, what is the difference?
NO. The first two are man-made clones.
The rest two are natural clones.
Pre-reading
5. Dolly the sheep _________________. A. looked exactly like the sheep that
provides the egg B. was the exact copy of the sheep that
provides the nucleus C. looked like the sheep that gave birth to it D. had the characteristics of all three sheep