气管隆凸开大，一般见于（）

A.右心房增大

B.左心房增大

C.右心室增大

D.左心室增大

E.膈肌上抬

读下面的短文，根据短文的意思用括号内的所给词的正确形式填空

Jack loved ice cream. He wanted to have ice cream every day.

On his birthday, Jack wanted ice cream, but his parents小题1:_______ （give）him a pet turtle as a present instead. Jack tried to teach his turtle to play games, but it couldn’t carry a ball in its mouth. It couldn’t jump high or run very小题2:_______ （quick）. Jack didn’t really like his turtle. He thought it was a boring pet.

One day, he 小题3:_______ （take）the turtle out of its box and found it didn’t move. Jack took it to his mom. “Mom,” he said. “My turtle is not 小题4:_______ （move）. I think it’s dead.”

“Don’t be sad,” she said. “We’ll put him in a box and bury (埋) him. Then we’ll go to the store and have some ice cream to make you feel 小题5:_______ （good）.”

Ice cream! Jack began to feel happy. Then his mother saw the turtle move.

“It’s all right!” she said. “Your turtle isn’t dead after all!”

“Oh,” said Jack. “Can I kill it?”