Shandong Business Daily, Qilu Evening News and China Youth Daily all have them. Shandong Business Daily buys a copy, with a full set of 20 10 college entrance examination questions and test papers, only 50 cents, that is, small words. I also use a magnifying glass. Qilu Evening News is better. The first issue of China Youth Daily has only one question.

Mathematics CBDDC DABCA AB

- 1.25; [0.2, positive infinity]; 30 degrees; X+Y-3=0

17.ψ=60 g(x) MAX=0.5，MIN=-0.25。

18.An=2n+ 1，Sn=n(n+ 1)，Tn=n/4(n+ 1)

19. Too many.

20.P(Q)=0.25，E(fai)= 2 * 1/8+4 * 3/8+4 * 1/2 = 27/8 = 4.375