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【单选题】
甲溶液的pH为4，乙溶液的pH为2，甲溶液与乙溶液的c（H + ）之比为（）。A.
100
B.
1/100
C.
2
D.
1/2
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皮皮学刷刷变学霸
举一反三
【简答题】Part II listen and watch A. Item 1 Listen to four short conversations and choose the best answer to each question.
【单选题】The investigation done in the IHD programs ______.
A.
focused on children from poor families
B.
was less convincing than Ramey's research
C.
confirmed the findings made in Ramey's research
D.
focused on the intelligence growth of children with low IQs
【判断题】China has suffered the most in anti-dumping investigation in the world for nine years running.
A.
正确
B.
错误
【简答题】Now listen and watch the following video clips about different views of time in various cultures, and try to note down each person's nationality and main idea in your own words in about 100 words。 写下每...
【简答题】Part II Listen and watch Item 3 School Uniforms 1. Read the graph This report is about the dress code in American schools. Listen to the report and choose the best answers to the following questions.
【单选题】The investigation group tried in ______ to discover what caused the failure of the engine.
A.
diligence
B.
vain
C.
vigor
D.
zeal
【判断题】China has suffered the most in anti-dumping investigation in the world for nine years running.
A.
正确
B.
错误
【单选题】China has suffered the most in anti-dumping investigation in the world for nine years running.
A.
T
B.
F
【简答题】Part II LIsten and watch B Item 2 Listen to a long conversation and choose the best answer to each question.
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