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【简答题】
在硼的化合物中,硼原子的最高配位数不超过4,这是因为 (A) 硼原子半径小;    (B) 配位原子半径大; (C) 硼与配位原子电负性差小;    (D) 硼原子无价层d轨道。
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【多选题】Read the statements and choose the ones that you think Zachary Blaine probably agrees with. Discuss your answers with a partner.
A.
Farm kids would like to do the things that city kids do.
B.
Most city kids get into trouble with drugs and alcohol.
C.
Growing up with a lot of responsibility is good for kids.
D.
It’s good for kids to visit places like museums, libraries, and theaters.
E.
Most city kids would like to grow up on a farm.
F.
City children might not get into trouble with guns,  alcohol, and drugs if they had animals to take care of.
【单选题】高血压脑出血的最常见部位是
A.
脑桥
B.
延脑
C.
丘脑
D.
基底节、内囊
E.
小脑
【单选题】反映了机构各种文献入藏情况的书目数据库,通过它可以查询某一文献在该机构是否有收藏或索书号的是
A.
期刊数据库
B.
馆藏目录查询系统
C.
学位论文数据库
【多选题】对于接触角的影响因素,以下说法正确的是
A.
对指定固体,液体表面张力越大,接触角越大。
B.
对指定液体,固体表面能越大,接触角越大。
C.
固体表面,特别是高能表面能自发地从周围环境中吸附某些组分而降低表面能,同时也改变了表面性质,从而影响接触角大小。
D.
温度、液滴形成时间等因素都可能对接触角产生影响。
【单选题】( )反映了机构各种文献入藏情况的数目数据库,通过它可以查询某一文献在该机构是否有收藏或索书号
A.
期刊数据库
B.
馆藏目录查询系统
C.
学位论文数据库
D.
二次文献数据库
【单选题】选出不包含/j/的单词
A.
yet
B.
you
C.
few
D.
jam
【单选题】吸附对固体表面表面能的大小的影响是( )。
A.
增加其表面能
B.
降低其表面能
C.
不影响
【单选题】高血压脑出血的最常见部位是
A.
脑桥
B.
延脑
C.
丘脑
D.
基底节、内囊
【单选题】That summer an army of crickets started a war with my father. They picked a fight the minute they invaded our cellar. Dad didn't care for bugs much more than Mamma, but he could tolerate a few spiders...
A.
urban.
B.
rural.
C.
metropolitan.
D.
extravagant.
【单选题】If your farm had the only known source of a rare cocoa bean needed to make chocolate-covered peanuts, your monopoly would result from:
A.
control of a scarce resource or input.
B.
technological superiority.
C.
increasing returns to scale.
D.
government-set barriers.
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