Դʦ֪ʶģԾ𰸣

21Ǹ֯________ƶ
AϵְλBְͬλCְͬλDϸְλ  
22Դ滮ijУȽеij________
AԤBսԹ滮CԤ⪤DԴ˲  
23һ˵ԱƸԴԷΪ________
AƼBѧУ᪤CƸƼDڲԴⲿԴ   
24ԹԱӦ________
Aռ֪BCD   
25оҵ________
ABCλD   
26ʹĶ͵Թ̵ڣһΪ________
A12СʱB1020ӪCСʱҪD34Сʱ   
27ɫм鷨ƣͼ________
AԷB۲켰֢״CD鷨   
28ԴоĹڹйҪĵһϣǹеһ?________
AB̸CʵD۲취   
29һڹ˵Ļ?________
AְBCȨDн   
30мУڹʾݵĿ________
AְBֱϼCְʱD   
31¼вڹ˵Ļݵ________
AϪBȨުCѶȪDϵ   
32Ч˵ĵһ________
A֯BЧ׼CDԱѵ   
33˵д________
AڹУ˵ijЩƫӰ쿼Ľ
BλӰ켨Ч˵׼ȷ
CͼʽЧСʹЧ׼ȷ
D˲ij̶ȶԿЧӰܴ   
34ܻӰ쵽Ч˵Ĺ________
AҵģBλ֯ҵеĵλCԱDֵ   
35ۿ׼ƻУԱĽԼͶɱܵýнԼΪ________
A.нʳɱóɱۼֵıֵB.нʳɱij˻C.нʳɱóɱۼֵij˻D.нʳɱıֵ   
36ij˾ÿÿСʱı׼Ϊ25λƷùΪÿСʱ10ԪƼΪÿλƷ________Ԫһÿ칤8СʱÿСʱ30ƷԱֱӼƼÿɵ________Ԫ
A.0.496B.0.296C.0.490D.0.280   
37________õĶвϹԱ
A.B.ɫݷC.D.ȫַ   
38________ָͶͨЭƶȺ͸Ͷͬƶȣ̸Э̣ȷͶȨA.ͶȨB.Ͷ̸ȨC.άͶͬȨD.ϹͶȨ   
39Σҵ͸________
A.ͶƵĽ誤B.ͬɵĽ誤C.շɵĽ誤D.ᱣƶȵĽ  
40áᡢĻȨʹԼ͹Ͷ֯ĹԼͽ涨Աṩ________񡣪
A.ҵB.C.סD.ᱣ