參考答案：

The Wrist Watch

It is generally believed that wrist watches are an exception / to the normal sequence in the evolution of man's jewelry. / Reversing the usual order, they were first worn by women, / and then adopted by men. / In the old days, queens included wrist watches among their crown jewelry. / Later, they were worn by Swiss workers and farmers. / Until World War I, Americans associated the watch with fortune hunters. / Then army officers discovered that the wrist watch was most practical for active combat. / Race car drivers also loved to wear wrist watches, / and pilots found them most useful while flying. / Soon men dared to wear wrist watches without feeling self-conscious. / By 1924, some 30 percent of man's watches were worn on the wrist. / Today, the figure is 90 percent. / And they are now worn by both men and women / for practical purposes rather than for decoration.
　
1-10 CABAD BACBA
11-20 CBDBD BDBAB
21-30 DBBCA CBDCA
31-40 AABAA CCABC
41-50 BDBAD DDBCD
51-60 AABBD ACBBC
61-70 ADCCD BDBBC
71-80 DABAC ACDDB
81-90 CADBC ABDAB