an news还是a news

是a news，例如：

a news release， the company said it had experienced severe financial problems.在新闻稿中，该公司表示自己遭遇了严重的财务问题。

announcement was made at a news conference.这项声明是在新闻发布会上宣布的。

made his comments at a news conference in Amsterdam他在阿姆斯特丹的记者招待会上发表了意见。