中国大学MOOC: The production of these biofuels, such as ethanol made from maize, has risen sharply recently, _____ the replacement of food crops with fuel crops has been heavily criticized.
举一反三
- GM foods are made from crops whose make-up has been genetically changed by recombinant DNA or gene splicing. </p></p>
- These crops are extremely ______ to climate change, which has been a tricky problem for the local farmers.
- California relies heavily on income from fruit crops, and____.
- 中国大学MOOC: For the topic of Genetically Modified Crops: food or poison, what is the problem with the specific purpose statement “genetically modified crops”?
- The price __________. A: has risen B: was risen C: has been risen D: is risen