由中国常驻联合国代表团和清华大学联合主办的“写在竹简上的中国经典——清华简与中国古代文明”专题展览在纽约联合国总部大楼举行。这是清华简首次走出国门,向世界展示中国古代文明的最新发现,也展示着自信的中国人和中国风。做一个自信的中国人,就要 (    )

①把个人的命运与祖国的发展结合在一起,我们的自信才有坚如磐石的根基

②善于把个人的自信上升为国家和民族的自信

③不做有损国格的事情

④只要有利于自己人格的事情就做

阅读短文，根据短文内容，从所给的A.B.C.D.四个选项中选出最佳选项。

      People drink tea. There are many kinds of tea, such as black tea, green tea, white tea and yellow tea. People drink a lot of tea in China. Some people drink it because they think it makes them healthy. Many people drink it because it tastes very good. It is delicious.

      People drink a lot of tea in Japan. People drink a lot of green tea in South Korea, too. In Vietnam, people like to drink coffee first. Then they drink tea.

     People drink a lot of tea in England. Every afternoon, people drink tea. It's “tea time”. English people like to drink their tea with milk in it.

      Many people drink black tea in the US. In the South, people like to drink sweet tea. Sweet tea is cold black tea with sugar in it.

      Most tea comes from China. Some tea comes from India or Sri Lanka. Kenya, Japan and Indonesia also grow tea.

如图中，图1表示胰腺分泌活动的调节过程，图2是图1的局部放大图，1～5代表特定的结构或物质，图3是胰岛示意图．请据图回答问题：

（1）当食物进入胃后，扩张胃体，通过反射作用于胰腺，刺激胰腺的外分泌部分泌胰液，该反射的效应器是____ ．当神经冲动传导到图2中的突触小体时，引发____与____ 融合，释放神经递质．

（2）除上述（1）的调节方式外，胰液的分泌还受到小肠黏膜分泌的____的调节．

（3）图3中胰岛A细胞和胰岛B细胞分泌的激素能有效地调节血糖浓度，其中胰岛B 细胞分泌的激素的作用是促进组织细胞加速对葡萄糖的____，从而使血糖水平降低．

（4）糖尿病有多种类型，其中Ⅰ型糖尿病人体内胰岛素的浓度偏低，Ⅱ型糖尿病人体内胰岛素的浓度正常或偏高，推测Ⅱ型糖尿病的直接原因最可能是细胞膜表面____减少或异常．

（5）有人患上了胰腺癌，这与免疫系统的____ 功能下降有关．胰腺细胞癌变的根本原因是胰腺细胞内的____ （基因名称）发生了突变．