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【单选题】
关于糖尿的说法错误的是A.
当血浆葡萄糖含量超过肾糖阈或肾小吸收能力下降时，尿液中排出葡萄糖增加，尿糖定性为阳性称为糖尿
B.
尿糖定性试验常用班氏法与干化学试带法
C.
法特异性强，只测定尿中葡萄糖
D.
干化学试带法测定葡萄糖的原理是葡萄糖氧化酶法，Vic对该法产生假阴性干扰
E.
其他糖尿包括乳糖、半乳糖、果糖、戊糖等
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举一反三
【单选题】Firms that use computers have found that the number of staff __________ is needed for quality control can be substantially reduced.
A.
whose
B.
as
C.
what
D.
that
【单选题】When firms exit a monopolistically competitive industry:
A.
the average total cost curves of remaining firms will shift upward.
B.
the demand curves of remaining firms are decreased at each level of output.
C.
the remaining firms will decrease production.
D.
the average revenue received by remaining firms will increase at each level of output.
【单选题】Firms use the money they get from a sale to
A.
pay wages to workers.
B.
pay rent to landlords.
C.
pay profit to the firms’ owners.
D.
All of the above are correct.
【单选题】运用基因工程技术手段，从苏云金芽孢杆菌中获取抗虫基因Bt，将Bt基因转移到优质油菜中，培育出转基因抗虫的油菜品种。这一品种在生长过程中能产生特异性的杀虫物质，对菜青虫有显著的抗性，能大大减轻农药的使用，保护农业生态环境。根据以上信息分析，下列叙述中正确的是 [ ]
A.
该抗虫基因Bt的结构是间隔的不连续的
B.
特异性的杀虫物质是某种抗体
C.
基因Bt不需要逆转录酶的作用就能表达
D.
抗虫油菜只能通过组织培养进行无性繁殖
【单选题】以下符合基因工程技术理念的是()
A.
根据人们需求，将人的T淋巴细胞与肿瘤细胞进行融合，获得杂交瘤细胞中包含淋巴细胞的抗性基因
B.
天然存在的噬菌体侵染大肠杆菌，并将其自身DNA融入到大肠杆菌基因组中
C.
用射线照射大肠杆菌，使其DNA序列发生改变，并产生新的性状
D.
将鱼的抗冻蛋白基因转入植物中获得抗寒的植物品系
【单选题】When firms use symbols, colors, or characters to convey their personalities, they are using ________ differentiation.
A.
image
B.
people
C.
usage-rate
D.
user-status
E.
channel
【单选题】The passage suggests which of the following about the use of temporary employment by firms during the 190's?
A.
It enabled firms to deal with fluctuating product demand far more efficiently than they before the 1980's.
B.
It increased as a result of increased participation in the workforce by certain demograp groups.
C.
It was discouraged by government-mandated policies.
D.
It increased partly as a result of workers' reduced ability to control the terms of their employment.
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