Part I Script
Directions: Listen to the short dialogs, and then choose the correct answers to the questions. You will hear the recording twice. After the first playing, there will be time for you to choose the correct answers. Use the second playing to check your answers.
1. (Listen to the audio recording for the question.)
2. (Listen to the audio recording for the question.)
3. (Listen to the audio recording for the question.)
4. (Listen to the audio recording for the question.)
A. The two speakers have a lot of common interests.
A. He does not want to eat GM food.
B. He wants GM food labeled.
C. He does not care if GM food is labeled.
D. He agrees with the woman.
A. The man is against organ cloning.
B. The woman is against organ cloning.
C. The man is a scientist devoted to organ cloning.
D. The woman will let her organ clones once it fails.
A. She wants the man to go to the meeting.
B. She wants the man to pick up the children.
C. She wants to clone the man.
D. She does not want a clone of the man.
B. The two speakers have both chosen Mr. Green's elective course.
C. The woman has a lot of knowledge on genetics.
D. The man is beginning to like genetics.
5. (Listen to the audio recording for the question.)
Part II Script
A. Both the man and the woman are against GM food.
B. Both the man and the woman are for the GM food.
C. The woman is probably a consumer of GM foods.
D. The man is probably a consumer of GM foods.
Directions: Listen to the passage three times. When the passage is read for
the first time, listen for the general idea. When the passage is read the second time, fill in the blanks numbered from (1) to (7) with the exact words you hear. For blanks numbered from (8) to (10), write down either the exact words you hear or the main points in your own words. When the passage is read the third time, check your answers.
There are many ways in which human stem cells can be used in basic research and in clinical research.
Studies of human stem cells may (1)yield information about the complex events identifythat occur during human development. A primary goal of this work is to (2) how stem cells become divided or differentiated (分化). Scientists know that turning genes on and off is (3)central to this process. Some of the most serious
abnormalmedical conditions, such as cancer and birth defects, are due to (4) cell division and differentiation. A better understanding of the genetic and molecular controls of these processes may yield information about (5)how such diseases
toarise and suggest new strategies for therapy. A significant barrier (6) this use and most uses of stem cells is that scientists do not yet fully understand the (7)signals that turn specific genes on and off to influence the differentiation
of the stem cell. (8)The most important potential application of human stem cells is perhaps the generation of cells that could be used for cell-based therapies. Today, donated organs and tissues are often used to replace ailing or destroyed tissue, but the need for transplantable tissues and organs far outweighs the available supply. (9)Stem cells, directed to differentiate into specific cell types, will offer a source of replaceme to treat diseases including Parkinson's and Alzheimer's diseases, spinal cord injury, stroke, burns, heart disease and diabetes. For example, (10) it may become possible to generate healthy heart muscle cells in the laboratory and then transpl. (1) (2) (3) (4) (5) (6) (7) (8) Your answer yield identify central abnormal how to signals Correct answer yield identify central abnormal how to signals The most important potential The most important potential application of human stem cells is application of human stem cells isperhaps the generation of cells and perhaps the generation of cells andtissues tissues (9) Stem cells, directed to differentiate Stem cells, directed to differentiatinto specific cell types, will offer a into specific cell types, will offersource of replacement cells and tissues source of replacement cells and tissue(10) it may become possible to generate it may become possible to generatehealthy heart muscle cells in the healthy heart muscle cells in the laboratory and then transplant those laboratory and then transplant thoscells into patients with chronic heart cells into patients with chronic headisease disease
Part III Script
Directions: Listen to the following recording, and then choose the correct answers to the questions. You will hear the recording twice. After the first playing, there will be time for you to choose the correct answers. Use the second playing to check your answers. 1. What is the Iceland company doing?
2. Why do the people of Iceland present a special opportunity to study the human
genome?
3. Why is the Iceland genome project superior to the American genome project?
A. Creating a detailed map of the genes of the Icelandic people. B. Creating a detailed map of all human genes.
C. Creating a map as detailed as those by some other projects. D. Creating a map less detailed than that by the American company.
A. Iceland has a small population.
B. Most of the Icelanders have a small group of ancestors. C. Plenty of records of their ancestors are available. D. All of the above.
A. Because it observes 200 million people. B. Because it observes 14 large families.
C. Because it observes more families than any other project. D. Because it observes more families than many other projects.
4. Why can the study of genes help to identify the causes of diseases?
A. Small genetic differences may be related to some diseases. B. Large genetic differences may be related to some diseases.
