单选题单子叶植物一般不能增粗是因为其没有______。 A.原形成层 B.原分生组织 C.原表皮层 D.顶端分生组织 E.侧生分生组织

单选题艾叶以产于何地者为最佳

单选题A．清热凉血B．养阴生津C．两者均是 D．两者均非(1991年第109，110题)

单选题Pretty in pink: adult women do not remember being so obsessed with the colour, yet it is pervasive in our young girls' lives. It is not that pink is intrinsically bad, but it is such a tiny slice of the rainbow and, though it may celebrate girlhood in one way, it also repeatedly and firmly fuses girls' identity to appearance. Then it presents that connection, even among two-year-olds, between girls as not only innocent but as evidence of innocence. Looking around, l despaired at the singular lack of imagination about girls' lives and interests. Girls' attraction to pink may seem unavoidable, somehow encoded in their DNA, but according to Jo Paoletti, an associate professor of American Studies, it is not. Children were not colour-coded at all until the early 20th century: in the era before domestic washing machines all babies wore white as a practical matter, since the only way of getting clothes clean was to boil them. What's more, both boys and girls wore what were thought of as gender-neutral dresses. When nursery colours were introduced, pink was actually considered the more masculine colour, a pastel version of red, which was associated with strength. Blue, with its intimations of the Virgin Mary, constancy and faithfulness, symbolised femininity. It was not until the mid-1980s, when amplifying age and sex differences became a dominant children's marketing strategy, that pink fully Came into its own, when it began to seem inherently attractive to girls, part of what defined them as female, at least for the first few critical years. I had not realised how profoundly marketing trends dictated our perception of what is natural to kins, including our core beliefs about their psychological development. Take the toddler. I assumed that phase was something experts developed after years of research into children's behaviour: wrong. Turns out, according to Daniel Cook, a historian of childhood consumerism, it was popularised as a marketing trick by clothing manufacturers in the 1930s. Trade publications counselled department stores that, in order to increase sales, they should create a "third stepping stone" between infant wear and older kids' clothes. It was only after "toddler" became a common shoppers' term that it evolved into a broadly accepted developmental stage. Splitting kids, or adults, into ever- tinier categories has proved a sure-fire way to boost profits. And one of the easiest ways to segment a market is to magnify gender differences—or invent them where they did not previously exist.

单选题根中常有同心环状异型维管束的科是： A．苋科 B．蓼科 C．毛茛科D．唇形科E．伞形科

单选题洋金花研末吞服的剂量是A．0.02～0.06gB．0.6～1gC．0.2～0.6gD．1～1.5g

单选题 种子中的胚乳由受精后的( )发育而来。 A、卵细胞 B、孢原细胞 C、助细胞 D、极核细胞 E、反足细胞

单选题A．苦楝皮 B．鹤虱 C．榧子 D．南瓜子

单选题具有行气利水功效的药物是

单选题麻黄科的特征是：

单选题治疗风湿痹证，无论寒热新久皆可配伍应用的是

单选题黄芩用于胎热胎动不安应A．生用B．炒用C．酒炒用D．盐水炙用

单选题琥珀入丸、散服用的一般剂量是

单选题常用茯苓而不用猪苓治疗的病证是

单选题A．山茱萸B．五味子C．五倍子D．莲子

单选题既可治疗风寒感冒，又可治疗水肿脚气的是

单选题 理中丸的君药是：（ ） A、干姜 B、人参 C、白术 D、干姜与人参

单选题A．补肾固精B．明目止泻C．两者均是 D．两者均非(1992年第107，108题)

单选题三棱与莪术的共同作用为

单选题除何证外，均为桔梗的主治证：