31.   The nightmare result might be the sudden appearance of a disease never seen before and for which no cure is known.

32.   The sudden appearance of an array of New York politicians on the advisory panels is worrisome.

33.   The sudden appearance of these records has also greatly annoyed Kenneth Starr, the independent counsel whose grand jury has been seeking them for two years.

34.   The sudden appearance of Officer F in the case was startling, mostly because his particular story has never before been heard.

35.   The sudden appearance of two low-flying fighter planes over the Albanian side on Wednesday terrified residents and the Albanian army alike.

36.   The sudden appearance of a brilliant new star in the heavens would certainly be taken by astrologers as a sign of some extraordinary occurrence.

37.   The sudden appearance of a lead can cause difficulties for inhabitants of the Sheba floe.

38.   The sudden appearance of aggression foretold more hostile manners Sunday.

39.   The sudden appearance of one cold jet nozzle in the Boeing JSF design surprised aerospace observers.

40.   They may already worry about bonding, racial questions, the possible sudden appearance of the birth mother, the acceptance of relatives.