墨尔本PTE 阅读排序 29752016/10/18
墨尔本PTE 阅读排序 29772016/10/18
A. Plants that use less water to grow have also been developed so they are more suitable for changing climatic conditions.
B. People have been manipulating the genetic make-up of plants and animals for countless generations.
C. Today’s techniques use new ways of identifying particular characteristics and transferring them between living organisms, with foods derived from genetically modified organisms being called ‘GM foods’.
D. This is referred to as traditional cross breeding and involves selecting plants and animals with the most desirable characteristics (e.g. disease resistance, high yield, good meat quality) for breeding the next generation.
E. All of the GM foods approved so far are from GM plants, for example corn plants with a gene that makes them resistant to insect attack, or soybeans with a modified fatty acid content that makes the oil better suited for frying.