人体中元素的含量多少影响人体健康.下列元素中直接影响甲状腺激素合成的是[ ]
A.钙
B.铁
C.锌
D.碘
答案:D
读一读,填一填。
Dear Peter,
How are you? I'm going to start a new school. I'm going to study at Qibao Middle School. It is near my
home. I'm going to study History, Science, Geography and other new things. I like Physics and Chemistry,
because I want to be a scientist when I grow up. Are you going to start middle school? What subjects are
you going to study?
Yours,
Li Ming
1. Li Ming is going to____________.
2. He is going to study at ____________.
3. The new school is_____________.
4. He is going to study _______ _______ _______ and other new things.
5. He likes Physics and Chemistry because______________.
在以下食物中胆固醇含量最高的是( )。
A.猪肉 B.猪肝 C.猪腩 D.猪舌头