下图漫画为杰里·本特利等著《新全球史》中有关经济全球化的内容。其寓意是（    ）

如图所示是某物质的质量m与体积V的关系图，由图可知，这种物质的密度与水的密度的关系为（  ）

心理学家分析发现视觉和空间能力与性别有关，某数学兴趣小组为了验证这个结论，从兴趣小组中按分层抽样的方法抽取50名同学（男30女20），给所有同学几何题和代数题各一题，让各位同学自由选择一道题进行解答．选题情况如右表：（单位：人）

（1）能否据此判断有97.5%的把握认为视觉和空间能力与性别有关？

（2）经过多次测试后，甲每次解答一道几何题所用的时间在5～7分钟，乙每次解答一道几何题所用的时间在6～8分钟，现甲、乙各解同一道几何题，求乙比甲先解答完的概率．

（3）现从选择做几何题的8名女生中任意抽取两人对她们的答题情况进行全程研究，记甲、乙两女生被抽到的人数为 X，求 X的分布列及数学期望 EX．

附表及公式

K²=$\frac{n{\left(ad-bc\right)}^2}{\left(a+b\right)\left(c+d\right)\left(a+c\right)\left(b+d\right)}$．

    To breed snails (蜗牛) well, you need to spray water to the container every morning and evening, change soil every two weeks, and feed them with cabbages and sweet fruits—this is what Sun Youxiang, a fourth-grade primary school student in Hangzhou____(conclude) after breeding snails for one year.

    From three small white snails at the very beginning____more than 60 snails of four generations now, he has done a great job in his assignment for his science class____(witness) the reproduction of animals is a precious experience for kids. Their____(create), patience, and respect for life will be stimulated (激发) as they learn to take care of animals on their own.

    Sun's teacher said the assignment served as a good example of life education. Practice____(be) an essential step in leaning, which will benefit the kids for____life time. Life education allows kids to know how to live with nature and creatures in a friendly way.

    Starting from this year, Science will become an____ (equal) important subject as Chinese and Math in primary schools____aims to improve students' knowledge about the surroundings____(draw) by curiosity, more kids will be willing to observe and think through practicing, which will add to____(they) recognition of the world in the long run.