Դʦ֪ʶ

21Ǹ֯________ƶ
aϵְλ
bְͬλ
cְͬλ
dϸְλ

22Դ滮ijУȽеij________
aԤ
bսԹ滮
cԤ⪤
dԴ˲

23һ˵ԱƸԴԷΪ________
aƼ
bѧУ᪤
cƸƼ
dڲԴⲿԴ

24ԹԱӦ________
aռ֪
b
c
d

25оҵ________
a
b
cλ
d

26ʹĶ͵Թ̵ڣһΪ________
a12Сʱ
b1020Ӫ
cСʱҪ
d34Сʱ

27ɫм鷨ƣͼ________
aԷ
b۲켰֢״
c
d鷨

28ԴоĹڹйҪĵһϣǹеһ?________
a
b̸
cʵ
d۲취

29һڹ˵Ļ?________
aְ
b
cȨ
dн

30мУڹʾݵĿ________
aְ
bֱϼ
cְʱ
d

31¼вڹ˵Ļݵ________
aϪ
bȨު
cѶȪ
dϵ

32Ч˵ĵһ________
a֯
bЧ׼
c
dԱѵ

33˵д________
aڹУ˵ijЩƫӰ쿼Ľ
bλӰ켨Ч˵׼ȷ
cͼʽЧСʹЧ׼ȷ
d˲ij̶ȶԿЧӰܴ

34ܻӰ쵽Ч˵Ĺ________
aҵģ
bλ֯ҵеĵλ
cԱ
dֵ

35ۿ׼ƻУԱĽԼͶɱܵýнԼΪ________
a.нʳɱóɱۼֵıֵb.нʳɱij˻c.нʳɱóɱۼֵij˻d.нʳɱıֵ
36ij˾ÿÿСʱı׼Ϊ25λƷùΪÿСʱ10ԪƼΪÿλƷ________Ԫһÿ칤8СʱÿСʱ30ƷԱֱӼƼÿɵ________Ԫ
a.0.496
b.0.296
c.0.490
d.0.280

37________õĶвϹԱ
a.
b.ɫݷ
c.
d.ȫַ

38________ָͶͨЭƶȺ͸Ͷͬƶȣ̸Э̣ȷͶȨ
a.ͶȨ
b.Ͷ̸Ȩ
c.άͶͬȨ
d.ϹͶȨ

39Σҵ͸________
a.ͶƵĽ誤
b.ͬɵĽ誤
c.շɵĽ誤
d.ᱣƶȵĽ

40áᡢĻȨʹԼ͹Ͷ֯ĹԼͽ涨Աṩ________񡣪
a.ҵ
b.
c.ס
d.ᱣ