Playing is easy.Winning is hard. Look at the 16 words and mentally assign them to related groups of four. Click on the four words you think go together. The groups are coded by color, though you don't know what goes where until you see the answers. The yellow group is the easiest, ...
【推荐2】Next time you are struggling with the crossword, try putting the kettle on. Drinking a cup of tea can improve creativity, a study suggests. Researchers gave men and women either tea or water and then asked them to complete a word association game, which was used to measure a fo...