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【单选题】
Scientists have found that inserting genes from a plant virus into the genes of a plant susceptible to that virus increases the plant s resistance to the virus. Because viral diseases account for a significant proportion of crop losses, such genetic alterations, even if carried out on only a modest scale, will significantly reduce crop losses. Each of the following, if true, strengthens the conclusion above EXCEPT:A.
In areas where two successive crops are raised per year, protecting the first crop from a virus will generally protect the second crop from that virus as well.
B.
By repeatedly attacking plants that are genetically altered to become virus-resistant, the virus often becomes less lethal to plants that are not genetically altered in that way.
C.
Plants that are genetically altered to become virus-resistant often pass virus-resistant genes on to their offspring.
D.
Plants that arc made genetically resistant to one kind of virus often acquire resistance to related viral strains as well.
E.
Plants that are made genetically resistant to one kind of virus are then more susceptible to infection by unrelated viruses.
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【简答题】与跳失人数相反的是 ,有效入店人数指访问店铺至 个页面才离开的访客数。
【多选题】《秋夜》中“我打一个呵欠,点起一支纸烟,喷出烟来,对着灯默默地敬奠这些苍翠精致的英雄们”,这些“英雄”指的是
A.
枣树
B.
小粉红花
C.
小青虫
D.
蜜蜂
E.
天空
【单选题】张先生,53岁,发生消化道出血,精神紧张,烦躁不安,面色惨白,尿量减少,血压下降首先应给予的处理是
A.
升压药维持血压
B.
静脉补液
C.
利尿剂
D.
强心药物
E.
吸氧、保暖
【单选题】张先生53岁,发生消化道出血,精神紧张烦躁不安,面色苍白,尿量减少.血压下降。首先应给子的处理是:
A.
升压药维持血压
B.
静脉补液
C.
利尿剂
D.
强心药物
E.
吸氧、保暖
【单选题】患者，女性，40岁，左侧肢体无力3个月入院，既往高血压病史，临床诊断脑出血恢复期收住入院。查体：患者神志清楚，左侧肢体偏瘫，Brunnstrom分级Ⅲ级，目前康复治疗正确的是
A.
控制肌痉挛和异常运动模式，促进分离运动的出现
B.
增强右侧肢体平衡和协调性训练
C.
增强左侧肢体肌力、耐力训练
D.
增强右侧肢体肌力、耐力训练
E.
提高左侧肢体肌张力，增强左侧肢体肌力训练
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