"I get by with a little help from my friends" is a popular lyric(抒情诗) with age-old wisdom behind it. 【B1】______ people need people is something we have 【B2】______ understood, but more recent research has confirmed the relationship 【B3】______ good health and good social relationships. 【B4】______ infants, the lack of human interaction may 【B5】______ retard (阻滞) the development of intelligence. Adults who seek supportive social relationships find greater longevity(长寿) and have 【B6】______ chances of developing a disease.
Most of us 【B7】______ develop relationships to increase our life spans 【B8】______ to improve our minds and bodies. Such improvements are side 【B9】______ . Instead, most people seek relationships 【B10】______ others to feel love, gain companionship, or simply to have fun. Mutual interests can be a 【B11】______ for new relationships. A good 【B12】______ to find new friends is to get busy 【B13】______ the things you love to do. That way, you're 【B14】______ to meet more people who 【B15】______ a similar interest and a similar view of the world.
A good relationship helps you feel lovable and capable. It 【B16】______ as a support system, 【B17】______ you to develop your full potential 【B18】______ a person. One of the most 【B19】______ things you can do for friends is to help them develop their self-concept as they help you develop 【B20】______ .
A.Because
B.Which
C.That
D.Whether
第1题
、洗涤并干燥至恒重后,精密称定硫酸钡(BaS04)的重量,即可计算硫酸根()量。用M表示分子量,则换算因数(F)为 ()。
第2题
、洗涤并干燥至恒重后,精密称定硫酸钡(BaS04)的重量,即可计算硫酸根()量。用M表示分子量,则换算因数(F)为 ()。
A.B.C.D.E.
第3题
、洗涤并干燥至恒重后,精密称定硫酸钡(BaSO4)的重量,即可计算硫酸根(SO42-)的量。用M表示子量,则换算因数(F)为
A.MBaSO4/MSO42-
B.MBaSO4/2SO42-
C.MSO42-/MBaSO4
D.2SO42-/MBaSO4
E.MSO42-/MBa2+
第9题
用重量法测定铬矿中Cr2O3的含量时,称取试样0.5304g,溶解后转化为,再沉淀为PbCrO4,经过滤、洗涤、烘干、灼烧至恒重得PbCrO4沉淀质量为0.3405g。求试样中Cr2O3的质量分数。
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