题干

关于桑椹胚和囊胚的比较,以下说法不正确的是

A:桑椹胚的各细胞结构功能基本相同

B:囊胚期细胞出现了细胞分化,但遗传物质未发生改变

C:囊胚期细胞分化是由遗传物质突变引起的

D:囊胚期内细胞团和滋养层细胞差异不是复制水平上的差异,而是转录水平上的差异引起

上一题 下一题 0.0难度 选择题 更新时间:2018-11-15 09:09:24

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C

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    Chinese President Xi Jinping stressed Wednesday that the socialist path China has followed is "correct," and it is the choice of the “history and people.”

    Citing(引用) the remarkable achievements China has made over the past 37 years when it initiated the reform and opening-up policy, Xi noted that it only took several decades for China to complete the journey the developed countries have gone through for centuries.

    “That fully shows that the Chinese people are following a correct path,” the president said while addressing a banquet hosted by Lord Mayor of the City of London Alan Yarrow on Wednesday evening.

    Meanwhile, he pledged that China will stay committed to a peaceful development path and does not accept the logic that a country will seek hegemony(霸权,领导权) once it gets strong.

    “No one and nothing — in any reason — can influence China's determination and will to pursue the path of peaceful development,” he said.

    In his speech, the president also explained in detail about the development of friendly relations between China and Britain, citing tea culture, literature, movies, TV dramas, football and cultural exchanges.

    He specifically referred to Shakespeare's influence on him by sharing the story of his youth time in the countryside, when he was deeply attracted by the master's works.

    “The China-Britain friendship has been deeply rooted in the hearts of our two peoples. And there is a solid foundation in public opinion and in society for the two countries to grow long-term relations,” he added.