还盘中对发盘表示接受，但对原发盘内容进行了修改或添加，（）。

搜题请搜索小程序“爱下问搜题”

问题单项选择题

A.这是一个无效还盘

B.这是还盘的一种形式，如具备发盘条件，就构成一个新的发盘

C.这是一个无效接受

D.这是一个有效接受

答案

参考答案：B

填空题

改错题

改错题。

For different reasons，people are pouring into big cities，which cause much more trouble

than expected.As the growth of the population，city problems are grown day by day.To begin

with，big cities are becoming so crowded that it makes find jobs very difficult.As a result，

people without jobs are likely to become danger to our society.In additional，the environment

is getting worse and worse，but there is pollution and traffic problems as well as.We can’t

choose but face with them.In my opinion，big cities need to control the population to help

develop itself for the future.In terms of improving the environment, every citizen should be

called on to contribute to protect the environment.