Rick and Mary are from America．Now they are working in Tianjin．They can speak a little Chinese．Every morning they get up very early．Then they go to work by car.·They are very busy．They have lunch at the factory．①After lunch they work again．They finish their work very late．  In the evening they take Chinese lessons(上汉语课)．They want to talk with Chinese people．They often say，“Chinese people are very friendly(友好的)．”②They like to stay in China and they like to work with Chinese people．

根据短文内容，完成下列题目。

在日常生活中，未成年人要学会自我保护。以下做法，你认为错误的是（    ）

①地震来临，坐电梯下楼逃生                                                  ②被坏人劫持时，勇敢地与他拼搏到底

③夜里发现煤气泄露，立即开灯，然后去关闭煤气阀门      ④人在家时，面对陌生人敲门不随意开门，注意保护自己

下列划线字注音完全正确的一项是   （     ）

如图为人的消化系统结构图，据图填序号与名称：

（1）人体的消化腺中最大的消化腺是____ ，它能分泌____ ，可以帮助消化____ 。
（2）能暂时贮存食物，并且进行初步消化的器官是____ 。
（3）消化管中含消化液种类最多的是____ 。