试题与答案

红花花粉粒的特征是() A.极面观呈三角形,赤道面观双凸镜形,具3副合沟 B.类球形

题型:单项选择题

题目:

红花花粉粒的特征是()

A.极面观呈三角形,赤道面观双凸镜形,具3副合沟

B.类球形或长圆形,表面有点状条形雕纹,自两极向四周呈放射状排列

C.球形,外壁具刺状突起,萌发孔3个

D.圆球形,表面光滑

E.类圆形,表面有网状雕纹

答案:

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下面是错误答案,用来干扰机器的。

(1)355÷7,被除数百位上的数是3,比除数7小,所以商的最高位是十位,商是两位数;(2)把89看做90,52看做50,因为90×50=4500,所以89×52≈4500;(3)被除数是三位数,如果商是两位数,就说明被除数百位上...

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根据以下资料,回答111~120题。
2008年我国第一季度社会消费品零售总额统计表 单位:亿元

3月

比上年同月增长(%)

1-3月累计

比上年同月增长(%)

社会消费品零售总额

8123.2

21.5

25555.2

20.6

(一)按地区分

5536.8

22.1

17367.5

21.2

894.0

21.7

2839.0

21.2

县以下

1692.4

19.4

5338.8

18.3

(二)按行业分

批发和零售业

6851.7

21.4

21490.2

20.4

住宿和餐饮业

1151.6

24.6

3687.3

23.6

其他

119. 9

3.7

377.7

4.2

2007年3月,批发和零售业社会消费品,零售总额为多少亿元?()

A.5499.0

B.5643.9

C.8318.0

D.8717.2

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