题目内容

With the creation of golden rice in _______, scientists had genetically modified food to increase its nutrient value for the first time.

A. 1996
B. 2000
C. 2004
D. 2007

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_________wasthefirstcountrytocommercializeatransgeniccropin1993withtheintroductionofvirus-resistanttobacco.

A. The USA
B. China
C. Brazil
D. India

In1995,Bacillusthuringiensis(Bt)Potatowasapprovedforcultivation,makingitthefirstpesticideproducingcroptobeapprovedin_________.

A. China
B. theUSA
C. theUK
D. Canada

By 2010, ____ countries had planted commercialized biotech crops and a further 31 countries had granted regulatory approval for transgenic crops to be imported.

A. 20
B. 23
C. 25
D. 29

In 2015, 92% of corn, 94% of soybeans, and _______ of cotton produced in the US were genetically modified strains.

A. 90%
B. 92%
C. 94%
D. 96%

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