The trial could set an important ______ for dealing with similar cases. A: presence B: precedent C: precondition D: preclusion

He left early on the ______ that he had a bad toothache and had to see the dentist. A: prescription B: pretext C: knowledge D: precondition

The third shipment of Blankets against Order No.CV323 is also to be delivered. Please take _______ measures against any damage in transit. A: preservative B: precondition C: precedent D: precautionary

The third shipment of Blankets against Order No.CV323 is also to be delivered. Please take _______ measures against any damage in transit.‌​‌ A: preservative B: precondition C: precedent D: precautionary

The author uses the examples of a tycoon and a taxi-driver to show that ______. ( ) A: different people have different ideas about the telephone B: high income is the precondition for the use of telephone C: telephone is essential only to those people whose career depends on it D: working people need a telephone