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【单选题】
参比电极的作用是（）A.
保持离子强度一致
B.
提供标准电极电位
C.
调节适宜pH范围
D.
消除干扰
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】In his novel, William Faulkner has invented a county named ______ and the seat of the county______.
【单选题】When William hurried home, he found that his mother ____already ____to hospital.
A.
has; been sent
B.
had; sent
C.
has; sent
D.
had; been sent
【单选题】He has many works of William Shakespeare, but only one is ______.
A.
initial
B.
elementary
C.
original
D.
primary
【单选题】In this area open-mining has ______ the natural scenery.
A.
ruined
B.
created
C.
added
D.
developed
【单选题】下列有关林则徐的评价,不正确的是:
A.
是近代中国地主阶级政治家
B.
是领导禁烟的民族英雄
C.
是近代中国“开眼看世界”的第一人
D.
“师夷长技”是为了维护人民利益
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