《都江堰》是一篇（） A.游记 B.记事散文 C.实体事物说明文 D.科学小品

人体摄入的碘过多或过少都会引起甲状腺肿大，因此目前市场上有加碘食盐和不加碘食盐供消费者选择。这里的“碘”是指  [ ]

A.元素    

B.分子    

C.原子    

D.离子

句型转换。

1. We had a lot of things to do that day.(改为同义句)

    _________ _________ a lot of things we could _________ that day.

2. Joe gave me a call just now.(改为一般疑问句)

    _________ Joe _________ _________ a call just now?

3. She invited only me to her birthday party.(改为同义句)

    She didn't invite _________ _________ to her birthday party _________ me.

4. Sorry, I don't know what I can do next. (改为同义句)

   Sorry, I don't know _________ _________ _________ next.

5. My friend Tim lost his new sports shoes. (改为否定句)

   My friend Tim _________ _________ his new sports shoes.

下面程序段的输出结果是
public class Test
public static void main(String args[])
int a，b；
for(a=1，b=1；a<=100；a++)
if(b>=10)break；
if(b%2==1)
b+=2；
continue；


System．out．println(

A．；
&n

掺有杂质的半导体称为（）。

A、本征半导体

B、天然半导体

C、杂质半导体

D、硅半导体

全口义齿后牙的非功能尖是指

A．上颌的舌尖，下颌的颊尖
B．上颌的舌尖，下颌舌尖
C．上颌颊尖，下颌颊尖
D．上颌的颊尖，下颌舌尖
E．上下颌的近中尖