The statistics on population growth and hunger are disturbing. Last year the world’s population reached 6 billion. The UN states that nearly 800 million people around the world are unhealthy. About 400 million women of childbearing age don’t have enough iron, which means their babies are exposed to various birth defeats. As many as 100 million children suffer from vitamin A deficiency, a leading cause of blindness.
How can biotech help? Genetic engineering is widely used to produce plants and animals with better nutritional values. Biotechnologists have developed genetically modified rice and they are working on other kinds of nutritionally improved crops. Biotech can also improve farming productivity in places where food shortage are caused by crop damage attributable to drought, poor soil and crop viruses.
38. The passage mainly talks about _______.
A. the world’s food problem
B. the development in biotech
C. the genetically modified foods
D. the way to solve food shortage
39.According to the passage, GM foods ________.
A. will replace naturally grown foods
B. are far better than naturally grown foods
C. may help to solve the problem of poor nutrition
D. can cause serious trouble in developing countries
40.The underlined sentence “The genetic genie is out of the bottle.” in paragraph 2 probably means that _______.
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