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【单选题】
()是保证人民当家作主的根本政治制度。A.
公有制
B.
人民代表大会制度
C.
基层民主自治制度
D.
全民所有制
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举一反三
【单选题】The reason why many American young people were involved in the social movements of the 1960s was that ____.
A.
They resented traditional white male values in US society.
B.
They love America so much.
C.
They thought they knew better than their teachers.
D.
They viewed the adult world with grave doubt.
【单选题】汉字是表意体系的(),从古至今没有出现大的断层,字形本身携带了众多古代的信息。对研究中华民族的历史与文化等,有特殊的意义。
A.
文字
B.
系统
C.
作用
D.
发展
【单选题】Why do teens drink? Reasons vary from ______ pressure to family patterns to social conditioning.
A.
spouse
B.
peer
C.
antagonist
D.
competitor
【单选题】在电极面积和外加电压都相同的情况下,分别用(1)汞电极,(2)铁电极,(3)光亮铂电极,(4)镀有铂黑的铂电极来电解水制备氢气,反应速率大小次序为
A.
（1）〉（2）〉（3）〉（4）
B.
（3）〉（1）〉（2）〉（4）
C.
（2）〉（1）〉（4）〉（3）
D.
（4）〉（3）〉（2）〉（1）
【单选题】Why do some people use social networking sites?
A.
To get help with homework.
B.
To keep in touch with families or friends who live far away.
C.
To arrange their social life.
D.
To play games.
【单选题】Why does the professor say this:
A.
To illustrate the social importance of the hallway
B.
To explain how walls determine who may enter a room
C.
To point out that homes are larger than in the past
D.
To describe the flow of traffic in the typical home
【简答题】分别用 (1) 铂黑电极, (2) 光亮铂电极, (3) 铁电极, (4) 汞电极,电解硫酸溶液,若电极极片的大小和外加电压相同,则反应速度次序是: A . (4)>(3)>(2)>(1) ; B . (2)>(1)>(3)>(4) ; C . (1)>(2)>(3)>(4) ; D . (4)>(2)>(3)>(1) 。
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