用句中划线部分词的反义词填空，使句意完整。

1. The bag is too heavy. You are not tall. You should carry the_____one.

2. His coat is_____. His mother wants to buy him a new one.

3. He says, "English is very interesting, but maths is_____."

4. My ruler is long. But his ruler is_____.

5. His father is very old. But he likes to play with _____ people.

卡环连接体的作用和弯制方法，下列错误的是（）。

A.连接体将卡环与基托连接成一整体

B.连接体具有加强义齿的作用

C.连接体应分布合理

D.卡环的连接体应互相重叠，加强义齿抗折能力

E.卡环连接体与支托连接体平行，然后横跨，形成网状结构