问题 单项选择题

下列关于植物组织培养和胚胎工程技术的叙述错误的是()。

A.胡萝卜根韧皮部细胞经组织培养发育成新植株体现了体细胞的全能性

B.早期胚胎培养与动物细胞培养的培养液通常都需加入血清

C.一次性给受体母羊植入多个胚胎,可增加双胞胎或多胞胎的比例

D.一般用植物的叶肉细胞作为外植体通过组织培养获得“脱毒苗”

答案

参考答案:D

解析:胡萝卜根韧皮部细胞经组织培养发育成新植株体,发育起点为细胞,最终形成了植物体,体现了体细胞的全能性.A正确;由于人们对细胞所需要的营养物质还没有完全搞清楚,所以早期胚胎培养与动物细胞培养的液体培养基中要加入动物血清,B正确:一次性给受体母羊植入多个胚胎,可增加双胞胎和多胞胎的比例,C正确;一般用代谢比较旺盛的根尖、茎尖等作为外植体进行组织培养,获得无病毒的植株.D错误。

判断题
填空题


What are the challenges facing multinationals that want to build their brands in China —I think the first thing is ignorance. There’s a huge (1) of the complexity in China, which is more complex than Europe. There are different rules of law, which (2) a significant factor. There are different (3) , Cantonese and Mandarin and lots of others in (4) , and dialects like Sichuan versions. You have problems of distribution. (5) Chinese brands have been (6) local because of the size of the market and the transportation system, What’s (7) built up there is a sort of a pride in localness.
How can companies build their brands in China —China is a place where (8) have to be very patient and you’ve got to build (9) time. You can’t go in (10) invest short-term and then pull out (11) then try to get back in (12) . It’s about being consistent, steady, building (13) reputation, building confidence and then rewards will (14) . It’s a consistent ability to anticipate need. It’s insightfulness that helps brands to (15) ahead.
How are local Chinese brands doing against the multinationals —China’s been built (16) local brands and there are a billion of them and they are (17) spending sums of money locally that really dominate the (18) . But the future is Chinese brands moving outside of (19) and marketing globally, because China’s got to move from a commodity economy to a (20) sophisticated economy, which fundamentally (21) brands. There isn’t a major economy in the world that (22) based upon producing great brands, because they provide far better margins and more sustainable (23) .
Has Asia produced any truly global brands —Japan has. Some of the major companies (24) do really very well with brands. In Korea, some of them (25) but some of them need to catch up in terms of understanding how to really build global brands.