[填空题]During the traditional wedding ceremony, the bridal couple promises each other lifelong devotion. Yet, about one out of four American{{U}} (36) {{/U}}ends in divorce. Since 1940, the divorce rate has more than doubled, and experts{{U}} (37) {{/U}}that, of all marriages that occurred in the 1970s,about 50% will end in divorce. The U.S. A. has one of the highest divorce rates in the world, perhaps even the highest. The fact that divorce is so{{U}} (38) {{/U}}in the United States does not mean that Americans consider marriage a{{U}} (39) {{/U}},unimportant relationship. Americans expect a great deal from marriage. They{{U}} (40) {{/U}}physical, emotional, and intellectual compatibility. They want to be deeply loved and{{U}} (41) {{/U}}. They prefer no marriage at all to a marriage without love and understanding. With typical American{{U}} (42) {{/U}},they end one marriage in the hope that the next will be{{U}} (43) {{/U}}. With no-fault divorce laws in many states, it is e