Read this article carefully and choose the most suitable heading from the list A – K for each paragraph in the article. The first is given as an example.

1. C

A. Disease Resistance

B. Pharmaceuticals

C. What are genetically modified foods?

D. Herbicide Tolerance

E. Cold Tolerance

F. Pest Resistance

G. Allergeniity

H. Phytoremediation

I. Some Criticism Against GM Foods

J. Unknown Effects On Human Health

K. Economic Concerns

2. Read the text carefully once again and answer these questions according to the information in the text.

1. Why do farmers use a lot of pesticides?

2. What are the three effects of treating crops with pesticides?

3. Why do farmers use weed-killers?

4. What has been done to some plants to help them tolerate cold weather conditions?

5. If a GM plant is planted, is it obviously grown as crop?

6. What types of concerns are raised about GM foods? Why?

7. Do scientists think that GM foods are dangerous to humans?

8. How can introducing GM food into the market widen the gap between the wealthy and the poor?

9. What is the possible way to avoid cross-pollinating?

10. What is bad about using the suicide gene technology?

Language Development

ǃ Past Tenses

The Simple Past is the tense most commonly used to refer to events that happened at a particular time in the past. This is very useful in science and engineering for explaining processes and procedures to show the sequence of events.

Look at this sentence from the article and underline the Past Simple Tense: Some years ago many children in the US and Europe developed life-threatening allergies to peanuts and other foods.

The Past Continuous is used to refer to activities that hadn’t been finished at the time mentioned.

Look at this sentence from the article and underline the Past Continuous Tense: A concern was growing at that time that introducing foreign genes into food plants might have an unexpected and negative impact on human health.

The Past Perfect and Past Perfect Continuous Tense are normally used to emphasize that one past event happened before another. They are very common in reported speech

Look at these sentences from the article and underline the Past Perfect Tense and Past Perfect Continuous Tenses: The scientists had created that variety of potato to test the methodology, and these potatoes were never intended for human or animal consumption.

This study claimed that there were appreciable differences in the intestines of rats fed with GM potatoes, although the scientists told that they had been feeding the rats with unmodified potatoes.

For more information refer to English Grammar in Use by R. Murphy Un.11, 12 and Un. 22, 23

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Skim the text to check your ideas.	\|	Read the newspaper article quickly before listening and say if Dr Kevorkian a saint or a monster?

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