NO71 The result will be still further raising of the legal age for going into employment，and still further difficulty in finding employment when that age has been attained。(2003。6) NO72 Healthy folks who take 400 international units daily for at least two years appear somewhat less likely to develop heart disease。(2004。1) NO73 Bent stripes，called chevrons(人字形)，painted on the roads make drives think that they are driving faster than they really are， and thus drivers slow down。(2000。1) NO74 If FIFA，football’s international ruling body，wants to improve the standard of refereeing at the next World Cup，it should encourage referees to keep their eyes on the action from a distance，rather than rushing to keep up with the ball，the researcher argues。(2000。6) NO75 In 1993，the owners of a large hotel and of several houses discovered，to their horror，that their gardens had disappeared overnight。