Directions: The following sentences are not concise. Try to improve them.
It is a well-known and proven fact that there is no cure yet for the common cold.
参考答案:【答案仅供学习,请勿对照自行用药等】
答案解析:
Some groups still have difficulty ______________ (获得社会服务).(
Some groups still have difficulty ______________ (获得社会服务).(access)