对称式写作布局构架
开头段：
Now we are entering a brand new era full of opportunities and innovations， and great changes have taken place in people’s view towards some traditional practices. When it comes to __________， people from different backgrounds hold different attitudes. And they rarely reach an absolute consensus on such an issue.
第一个主体段落 一方面
Granted， there could be some positive effects __________may bring about when people choose to _______.
One social factor that influences people’s decision is that ____________. 拓展…
Another reason is concern over _____________.拓展…
In the third place，________.拓展…
