C. Read and match. 读一读，猜猜这些人的职业，再与相应的图片连线。

1. 第一行左侧文本 → 右侧第三张黑板图片
2. 第二行左侧文本 → 右侧第四张听诊器图片
3. 第三行左侧文本 → 右侧第一张灭火器图片
4. 第四行左侧文本 → 右侧第二张飞机图片

我们逐句理解句意，结合职业的标志性物品完成匹配：
1. 第一句“I help people learn. I work at a school.”意为我帮助人们学习，在学校工作，对应的职业是教师，匹配右侧第三张带教学教具的黑板图片。
2. 第二句“I help sick people. I work in a hospital.”意为我帮助病人，在医院工作，对应的职业是医护人员，匹配右侧第四张听诊器的图片。
3. 第三句“I save people and put out fires.”意为我救人、灭火，对应的职业是消防员，匹配右侧第一张灭火器的图片。
4. 第四句“I fly planes to take people to many places.”意为我驾驶飞机送人们去往各地，对应的职业是飞行员，匹配右侧第二张飞机的图片。

■ D. Complete the tasks. 阅读短文，根据指示完成任务。
The students in my class have different dream jobs. Some students want to be farmers, doctors, teachers or pilots. But Peter wants to be a dietitian. It is an interesting job. Dietitians need to know about people's eating habits（饮食习惯）and physical conditions（身体状况）. Then they tell people what they should eat. Peter wants to be a dietitian because he wants to help people stay healthy.

1. “dietitian”的意思是：。
a. 理发师 b. 驯兽师 c. 营养师
2. How many students are there in the class?
3. 写一写你想从事的职业以及理由。
I want to be because .

1. c. 营养师
2. We can get the total number by adding the numbers of students for each dream job in the chart: $4+12+8+10+14=48$. So there are 48 students in the class.
3. 示例答案：a scientist; I want to invent useful things to make people's lives more convenient.