题目内容

In2017,theareaofbiotechcropsinChina was________millionhectares.

A. 1.2
B. 1.8
C. 2.3
D. 2.8

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In2017,theareaofbiotechcropsin India was________millionhectares.

A. 9.4
B. 11.4
C. 13.4
D. 16.4

In2017,theareaofbiotechcropsin Australia was________millionhectares.

A. 0.4
B. 0.6
C. 0.9
D. 1.4

In April _______, a white button mushroom (Agaricus bisporus) modified using the CRISPR technique received de facto approval in the United States, after the USDA said it would not have to go through the agency's regulatory process.

A. 2013
B. 2014
C. 2016
D. 2018

Palmer amaranth is a weed that competes with cotton. A native of the southwestern US, it traveled east and was first found resistant to glyphosate in 2006, less than ____ years after GM cotton was introduced.

A. 6
B. 8
C. 10
D. 12

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