quantitative
Quantitative chemical analysis shows that water has two atoms of hydrogen to one of oxygen.
radiant
She was radiant with joy at her wedding.
random
The experiment cannot be satis，factory because he has to use the random selection of specimens.
rebound
The official statistics on productivity growth exclude the usual rebound in a business cycle.
recipe
What is your recipe for success?
refreshment
Refreshments can be bought on the train.
regime
The changes made under the present regime are very large in our work.
resignation
His resignation is only a gesture.