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Scientists were embroiled (使卷入) last week in an international row over genetically modified cotton (GM cotton).A study in China suggested for the first time that the crop was permanently damaging the environment and that insects were building up resistance to it.The study, by the Nanjing institute of Environmental Science, combined the laboratory and field work from four Chinese scientific institutes. The study was done over a several - year period.GM Cotton had a gene resistance to the cotton bollworm (棉铃虫) and isolated from the bacterium (细菌) named Bacillus thuringiensis (Bt), but the study found that it harms the natural parasitic (寄生的) enemies of the cotton bollworm.It also indicated that populations of pests besides the bollworm had increased in Bt cotton fields and some had replaced the bollworm as the primary pest.However, the leading GM company, the US's Monsanto, which controls more than 80 per cent of the Bt cotton grown worldwide, dismissed the research.It said that the industry has always cited GM cotton as its biggest success, because it can increase yields by up to 60 per cent and reduce the need for pesticides (杀虫剂) by 80 per cent.But, unfortunately for the industry, (80) the scientists also found that the resistance of Bt cotton to bollworm decreased significantly over time.Why scientists say no to GM cotton?A．Because the cotton was genetically modified.B．Because the cotton was found to damage the environment.C．Because the cotton harms the bollworm.D．Because Monsanto dismissed the research.
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上述材料表明，文化创新的过程是（） ①改造传统文化，创造新文化的过程 ②“取其精华、去其糟粕”“推陈出新、革故鼎新”的过程 ③不同民族文化之间交流、借鉴与融合的过程 ④开展文化合作，消灭文化差异的过程 徐悲鸿文化创新的做法对我们的启示是（） ①抛开传统文化，积极进行文化创新 ②坚持继承传统、推陈出新 ③坚持面向世界、博采众长 ④推崇外来文化，根本否定传统文化
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以下由于肠黏膜分泌增多引起的腹泻是（）
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下列属于窃电行为的是（）。
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一般情况下，测量中多以（）作为测量基准。
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患者，男，14岁。2年前诊断为1型糖尿病。近日在家中使用胰岛素治疗后，突然昏迷。首选的抢救措施是（）
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大车止挡器出现什么状况时不准开车？
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查询查复仅限于国内业务，分为（）业务。
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（）是傣族入山劳作时常带的午餐。
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赋值语句中赋值号只能是变量，不能是常量。