451. Smoking is harmful to your health.吸烟有害健康。 452. A foreign language is a useful weapon in economic struggle.外语是一种经济斗争的有力武器。 453. He never lose heart(lost hope).他从不失去信心。 454. He went on fighting until the victory was got.他仍在奋斗，直到取得胜利。 455. We still need to move on.我们还是要坚持前进。 456. Stop living in the past.不要总是生活在过去的阴影里。 457. He gave his life to the cause of revolutionary. 他为革命事业献出了自己的一生。 458. We must fight for the aftertime(future) of our motherland.我们一定要为我们祖国的未来而奋斗。 459. The people helped each other in their fight against the flood.大家齐心协力，与洪水展开决战。 460. I will be pride of you when you take great contribute for the society.你们能对社会做出伟大贡献，我也会很自豪。 461. The town has changed a great deal since reformation.改革以来这座城市发生了很大变化。 462. At last, we entered(joined) the World Trade Organization.终于，我们进入了世贸组织。 463. We’d fight for freedom and democracy with all the life.我们将用毕生精力为自由和民主而战。 464. Women play an important part in our socialist construction.妇女在社会建设中扮演重要角色。 465. It’s necessary to keep on the wonderful family traditions.保持家庭传统美德，很有必要。 466. Fight, only fight, we have our wonderful future(aftertime).奋斗，只有奋斗，我们才有美好的未来。 467. The Party led us from one victory to another.党领导我们从胜利走向胜利。 468. Led by the Party, the Chinese people are going all out to build socialism.在党的领导下，中国人民正全力建设社会主义 469. Knowledge is power.知识就是力量。 470. It’s very important to get along（well）.和睦相处很重要。 471. It’s glorious for you to have a labour habit.劳动最光荣。 472. He spoke out in favour of reforms.大胆发言，赞成改革。 473. It’s much important to reform the education system。教育改革，事关重大 474. All things are difficult before they are easy.万事开头难。 475. We could do nothing, but try our best. 除了努力，我们别无选择。 476. From small beginnings come great things.伟大始于渺小。 477. Nothing is impossible to a willing heart.有志者事竟成。 478. The long travel comes from the first step.千里之行始于足下。 479. A thousand-li journey is starmed by the first step.千里之行始于足下。 480. Nothing seek
