共15题,每题1分.每题的备选项中,只有1个最符合题意

1、 56,66,78,82,()

A.98

B.100

C.96

D.102

2、 7/9,13/9,20/9,28/9,()

A.25/9

B.37/9

C.26/9

D.8/3

3、 18,-27,36,(),54

A.44

B.45

C.-45

D.-44

4、 9,1,4,3,40,()

A.81

B.80

C.121

D.120

5、 66,79,93,108,()

A.121

B.120

C.122

D.124

6、 用一台机床加工一批零件,2.4小时可加工这批零件的言,照这样计算,加工这批零件还需几小时？

A.0.6

B.2.4

C.3

D.18/5

7、 最大的三位数加最小的一位数,得数是

A.999

B.1100

C.1000

D.1001

8、 甲乙两个队修一条路,乙队单独修10天完成,甲队每天修150公里,如果两队合修9/2天可以修全路的3/4,这条路全长多少公里？

A.1600

B.1700

C.1200

D.2250

9、 一个长方形的操场,周长是270米,,长与宽的比是5：4,这个操场面积是

A.1000

B.370

C.4500

D.15000

10、 2362-421+638-579的值为

A.2000

B.2200

C.2100

D.2050

11、 李先生储蓄人民币1200元,定期2年,月利率为0.9％,到期时,他可得到本息多少元？

A.50

B.28

C.1229

D.1459.2

12、 8724X65+8725X35的值为

A.872535

B.872565

C.872435

D.872465

13、 某国1995年的国民总收入是105亿元,总储蓄是7.5亿元,问该国的1995年的储蓄率是多少？(近似值)

A.3％

B.1.4％

C.0.1％

D.7.1％

14、 如果A>B,且C为正数,下列哪个是错误的？

A.AB>BC

B.A+C>B+C

C.C—A>C—B

D.A：B>B：C

15、 瓶内装有酒精,倒进500克以后又倒出一半,又倒进500克,这时瓶内有酒精1200克,瓶内原有酒精多少克？

A.750

B.800

C.850

D.900

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