超星 - Test 18 - 查题吧

判断题

The risk of horizontal gene transfer between GMO plants and animals is very low and in most cases is expected to be lower than background rates.

A. 对
B. 错

判断题

The General Accounting Office (in a review of FDA procedures requested by Congress) and a working group of the Food and Agricultural and World Health organizations both said that long-term human studies of the effect of GM food are not feasible.

A. 对
B. 错

判断题

American Association for the Advancement of Science (AAAS) claims that, "The World Health Organization, the American Medical Association, the U.S. National Academy of Sciences, the British Royal Society, and every other respected organization that has examined the evidence has come to the same conclusion: consuming foods containing ingredients derived from GM crops is no riskier than consuming the same foods containing ingredients from crop plants modified by conventional plant improvement techniques."

A. 对
B. 错

判断题

Potential environmental effects of GM crops include gene flow, pesticide resistance and greenhouse gas emissions.

A. 对
B. 错

判断题

The spread of genes from modified organisms to unmodified relatives could produce species of weeds resistant to herbicides that could contaminate nearby non-genetically modified crops, or could disrupt the ecosystem.

A. 对
B. 错

判断题

Genetic use restriction technology (GURT) "Terminator" would allow the production of crops with sterile seeds, which would prevent the escape of GM traits.

A. 对
B. 错

判断题

The escape of genetically modified seeds into neighboring fields, and the mixing of harvested products, is of concern to farmers who sell to countries that do not allow GMO imports.

A. 对
B. 错

判断题

The development of glyphosate-tolerant (Roundup Ready) plants changed the herbicide use profile away from more persistent, higher toxicity herbicides and reduced the volume and harm of herbicide runoff.

A. 对
B. 错

判断题

A claimed environmental benefit of Bt-cotton and maize is reduced insecticide use. A PG Economics study concluded that global pesticide use was reduced by 286,000 tons in 2006, decreasing pesticidal environmental impact by 35%.

A. 对
B. 错

判断题

Resistance in GM crops evolves naturally after a population has been subjected to selection pressure via repeated use of a single pesticide.

A. 对
B. 错

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