采煤机启动时外带负载，会造成采煤机（）。

A、不能牵引

B、不能截割

C、自动启动

D、不能自保

Directions:

There has been a discussion recently on the issue of changes in family in a newspaper. Write an essay of 160-200 words to the newspaper to

1. show your understanding of the symbolic meaning of the picture below

· the content of the picture

· the symbolic meaning

· the special understanding

2. give possible reasons for this phenomenon, and

3. draw a conclusion.

You should write neatly on ANSWER SHEET 2.

下面有两张全家福照片。一张照片上是一个大家庭，有爷爷、奶奶、爸爸、妈妈、小孩子，还有叔叔、姑姑等一些亲戚。照片下面有拍摄的日期：1949年；另一张照片上只有爸爸、妈妈和一个孩子，是个典型的核心家庭。照片下面的日期是2002年。