Plant scientists have been able to genetically engineer vegetable seeds

vicar · 发表于 2020-7-4 18:04:42

SHAjjjj 发表于 2020-1-9 17:09
D 选项我感觉不好
1. 根本没有说产量高了就普及，产量低了就不能普及。原文都没说这个标准，原文只是讨论 ...

同感觉d不好。b中假如原来的种子就使用过量农药意味着继续使用原来的种子但减少农药使用量即可达到相同效果，新种子没有吸引力

[逻辑小分队] Plant scientists have been able to genetically engineer vegetable seeds