选词填空。安静平静恬静 1．小姑娘的脸上露出（）的笑

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问题填空题

选词填空。

安静　　平静　　恬静

1．小姑娘的脸上露出（　　）的笑容。

2．刘老师走了进来，教室里顿时（　　）下来。

3．大潮过后，钱塘江又恢复了往日的（　　）。

答案

1．恬静　2．安静　3．平静

阅读理解

阅读短文，判断正“T”误“F”。

Look at the picture. There is a bird and a cat in it. They are very little. The bird is sitting in a tree. It is

singing. The cat is under the tree. It is looking up (往上看) at the bird. The cat is very happy with the bird's

songs.

The cat and the bird are very happy to meet each other. They become (变成) good friends.

( ) 1. There is a bird and a dog in the picture.

( ) 2. They are very big.

( ) 3. The bird is under the tree.

( ) 4. The cat likes the bird's songs.

问答题简答题

热介质膨胀罐用何种气体密封？其作用是什么？