A couple was celebrating their golden wedding anniversary. Their domestic tranquility had long been the talk of the town. A local newspaper reporter was inquiring as to the secret of their long and happy marriage. “Well，it dates back to our honeymoon，”explained the man.“We visited the Grand Canyon and took a trip down to the bottom of the canyon by pack mule. We hadn’t gone too far when my wife’s mule stumbled. My wife quietly said，‘That’s once. ’” “We proceeded a little further and the mule ...
