He told a special session on China that an increasingly prosperous China will provide the world with more "Chinese opportunities" in development, namely market opportunities, investment opportunities, growth opportunities and cooperation opportunities.

▲本句如果用told，那么就不缺介词，因为tell 的用法是：tell sb. that 从句。问题是，a special session on China 的意思是“关于中国的专题会议”，（原翻译“中国专场活动”）能否作told的宾语？

▲建议把told 改为said，在a special session 之前加at。有时候，新闻英语在语法上未必完全正确。