已知八年级（1）班共有60人，分成五个组，各组人数在频数分布直方图中的小长方形高

压力记录曲线的坐标规定横坐标代表井深，纵坐标代表压力。

语法填空。

读下面短文，照句子结构的语法性和上下文连贯的要求，空格处填入一个适当的词或使用

括号中词语的正确形式填空。

     If you struggle against figures, maybe you were born that way, research has suggested. Being

good at mathematics may be entirely pre-destined-you either have it   1   you don't.

    And those who find   2   difficult to add up the number shouldn't feel too hopeless-mathematical

talent does not appear to be linked to all-round intelligence. Previous research has indicated that

"number sense" is    3   (base) to humans. We use it to estimate such things as    4   number of seats

in a cinema or crowd sizes.

     U.S. psychologists at Johns Hopkins University in Baltimore made their finding after testing children

too young to have been taught mathematics. During the study, 200 four-year-olds   5   (study) in terms

of number senses, calculation skills and vocabulary. The verbal test was done for the reason   6  

language and maths abilities are thought to be   7   (close) linked through general intelligence.

     "Unlike    8   previous studies proved, this one shows that the link   9   number sense and maths

ability is already present before the beginning of formal maths instruction. One of the most important

questions is whether we can train a child's number sense   10   (improve) his future maths ability."

取深层角膜异物时应注意（）

A.异物取出后点抗生素眼液

B.务必一次取净

C.严格执行无菌操作

D.包扎

E.缝合伤口

进出口合同中索赔条款有两种规定方式（）

A.异议条款

B.索赔条款

C.罚金条款

D.异议和索赔条款

E.仲裁

以下哪个不属于数据库营销的优越性（）

A.体现企业精神

B.准确找到目标消费群

C.降低营销成本

D.改善竞争者关系