[单项选择]Sometimes the tension produced by fears is so great that we cannot Suppress it. At such times we need to ______ the tension by laughing or crying. '


A. discard
B. disperse
C. disguise
D. discharge

[单项选择]

Passage Four
In 1807 Noah Webster began his greatest work, An American Dictionary of the English Language. In preparing the work, he devoted ten years to the study of English and its relationship to other languages, and seven more years to the writing itself. Published in two volumes in 1828, An American Dictionary of the English Language has become the recognized authority (权威) for usage in the United States. Webster’s purpose in writing it was to show that the American language was developing distinct meanings, pronunciations, and spellings from those of British English. He is responsible for advancing simplified spelling forms: "develop" instead of the British form "develope"; "theater" and "center" instead of "theatre" and "centre"; "color" and "honor" instead of "colour" and "honour".

According to this passage, which one of the following spellings wou
A. Develope.
B. Theatre.
C. Color.
D. Honour.

[单项选择]Centuries ago in Europe, it was considered of great beauty to have ______.


A. pale skin
B. light—colored skin
C. dark—colored skin
D. a suntan

[单项选择]Which of the following is NOT included in the Great Lakes


A. Superior.
B. Missouri.
C. Huron.
D. Ontario.

[单项选择]I don't think it's sensible of you to （） your greater knowledge in front of the chairwoman, for it may well offend her.
A. show up
B. show off
C. show out
D. show away

[单项选择]______ is known to the world, Mark Twain is a great American writer.


A. That
B. Which
C. As
D. It

[单项选择]I don't think it's wise of you to ______ your greater knowledge in front of the director, for it may offend him.
A. show up
B. show out
C. show in
D. show off

[单项选择]The author fears that children will grow up into adults who are ______.


A. too independent of others
B. too critical of themselves
C. unable to think by themselves
D. unable to use basic skilly

[单项选择]The fears that the Ebola-like disease could spread into Uganda can be explained by the fact that ______.

[单项选择]The hopes, goals, fears and desires ______ widely between men and women, between the rich and the poor.
A. alter
B. shift
C. transfer
D. vary

[单项选择]张力性气胸（Tension Pneumothorax）的紧急处理原则是（）
A. 将开放性气胸变成闭合性气胸
B. 粗针头穿刺胸膜腔减压
C. 胸腔闭式引流
D. 气体量超过30%再给予处置
E. 开胸探查

[判断题]库仑法测硫时，用干燥空气作为载体的目的是防止SO2或SO3在进入电解池前形成H2SO3或H2SO4吸附在管道中，使测定值偏低。
A.正确
B.错误

[单项选择]用重铬酸钾标定硫代硫酸钠溶液的反应式如下：K₂Cr₂O₇+7H₂SO₄＝4K₂SO₄+Cr₂（SO₄）₃+7H₂O+3I₂，2Na₂S₂O₃+I₂=Na₂S₄O₆+2NaI，问：1个重铬酸钾分子能消耗几个硫代硫酸钠分子（）
A. 2个
B. 3个
C. 5个
D. 4个
E. 6个

[判断题]从弹筒发热量中扣除H2SO4校正热或H2SO4与SO2生成热之差后即得高位发热量。
A.正确
B.错误

[单项选择]

1升溶液中含纯H₂SO₄4.90g，则此溶液中H₂SO₄量浓度C（1/2H₂SO₄是（）

A. 0.1mol/L
B. 0.05mol/L
C. 0.02mol/L
D. 0.01mol/L
E. 0.001mol/L