题目

阅读.从各个小题所给的四个选项中选出能回答所提问题或完成所给句子的一个最佳答案。Deng YuIn 2050, China will be richer than it is now. Beijing will be getting ready for the 40th Olympic Games in 2052. We will see the blue and clear sky and smell the fresh air. There will be more pandas living happily in China. I believe that 2050 will be the year of China.Liu YuanA holiday trip to the moon will no longer(不再) be a dream. We can also travel far to other planets and talk with the spacemen. We might also eat something like pills instead of meals. Everyone wi右下图表示内环境稳态的部分调节机制。下列表述正确的是（   ）A．①②③过程中都有信息分子释放B．神经系统可以控制某些内分泌腺的活动，而内分泌系统对神经系统基本无影响C．内环境由血液、组织液和淋巴等成分组成D．若②表示促甲状腺激素，则其分泌量仅受促甲状腺激素释放激素的调节