资料题：A folding case is useful for,（　）。

As more women in the United States move up the professional ladder, more are finding it necessary to make business trips alone.Since this is new for many, some tips are certainly in order.if you are married, it is a good idea to encourage your husband and children to learn to cook a few simple meals while you are away.They will be much happier and probably they will enjoy the experience.If you will be eating alone a good deal, choose good restaurants.In the end, they will be much better for your digestion.You may also find it useful to call the restaurant in advance and state that you will be eating alone.You will probably get better service and almost certainly a better table.Finally, and most importantly, anticipate your travel needs as a businesswoman; this starts with lightweight luggage which you can easily manage even when fully packed.Take a folding case inside your suitcase; it will come in extremely handy for dirty clothes, as well as for business document and papers you no longer need on the trip.And make sure you have a briefcase so that you can keep currently required papers separate.Obviously, experience helps, but you can make thing easier on yourself from the first by careful planning,so that right from the start you really can have a good trip!