已选分类
医学中药学
单选题雄黄的功效是: A.解毒 B.通便 C.助阳D.镇心安神E.纳气平喘
单选题既能散寒止痛,又能温中止呕的药物是: A.佩兰 B.秦艽C.吴茱萸D.五加皮 E.桑寄生
单选题始载草豆蔻的本草书籍是
单选题有清热解毒之效的息风止痉药是:
单选题功能化湿行气,温中止呕,止泻,安胎的药物是:
单选题Malthusian fears that population growth will outstrip food supplies have been widely discounted as food production has kept well ahead of growing human numbers in the last half century. While population doubled, food supply tripled, and life expectancy increased from 46 in the 1950s to around 65 today. But more recently, some experts have once again been sounding the alarm about a possible food crisis. The reason lies in the combined impact of many factors including climate change, forest denudation, land degradation, water shortage, declining oil supplies, species extinction, destruction of coastal ecosystems and the growing demands for a meat-rich diet from newly developed parts of the world. At the root of all these problems has been the ruthless exploitation of the earth's resources, fuelled by growing affluence in some parts of the world and desperate poverty in others. Between 1980 and 2000, global population rose from 4.4 billion to 6.1 billion, while food production increased 50 per cent. By 2050, the population is expected to reach 9 billion. Data shows that while grain yields per acre have been increasing, the rate of increase has been slowing since the days of the Green Revolution in the 1970s. Most of the benefits of irrigation, machinery, fertilizer and plant breeding have already been realized. The production of grain per acre is close to the maximum obtainable through photosynthesis. To keep up with the growth in human population, more food will have to be produced over the next 50 years than has been during the past 10,000 years combined, said the participants of the recent UN-backed forum in Iceland on sustainable development. It is, of course, possible that new technologies, smart environmental management and sensitive social policies will combine to good effect to usher in a new green revolution. But as grain reserves have fallen to their lowest level for many years, this cannot be guaranteed. At the 1996 World Food Summit political leaders from 186 countries pledged to halve the number of hungry people in the world by the year 2015, or a reduction of 20 million each year. At that time, about 800 million people were reported to suffer from under- nourishment. In 2007 estimates from the UN Food and Agriculture Organization (FAO) suggest that there are 854 million people who do not get enough to eat every day. "Far from decreasing, the number of hungry people in the world is currently increasing," said FAO Director-General Jacques Diouf. (Of course, world population has increased by some 800 million in that time, so food supplies have kept up relatively well, but have failed to reach an increasing number, let alone reduce the total going hungry.)
单选题手阳明大肠经和足阳明胃经在头面部相交于
单选题A.豨莶草 B.海风藤 C.海桐皮 D.桑枝
单选题上入肺、中走脾、下达肾与膀胱的药是( )(2001年第36题)
单选题丸剂中有金石,贝壳类药物,为防止质重伤胃,多选用
单选题A.羚羊角B.钩藤C.牛黄D.天麻
单选题茵陈蒿的入药部位是: A.根 B.根皮 C.根茎D.全草E.叶
单选题A.使君子、苦楝根皮B.川楝子、白芍C.榧子、槟榔D.人参、当归
单选题A.羚羊角B.钩藤C.牛黄D.天麻
单选题既能治疗食积气滞,泻痢后重,又能治多种虫积证的药物是
单选题下列除哪项外,均属于药性升降浮沉的确定依据是A.药物的剂型B.药物的效用C.药物的性味D.药物的质地轻重
单选题复元活血汤的病位是
单选题治疗血淋涩痛,宜选用的药物是( )(2010年第33题)
单选题芒硝用于实热积滞,大便燥结证,常相须为用的药物是A.火麻仁B.黄连C.石膏D.大黄
单选题善祛痰而截疟,为治疟之要药的药物是
