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【单选题】
Which of the following most accurately describes how to calculate the unemployment rate?A.
(Unemployed / population) × 100
B.
(Unemployed / employed) × 100
C.
(Unemployed / labor force) × 100
D.
[(Unemployed – employed) / labor force] × 100
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【单选题】选择题。 — What do you know Canadians? — I know they ______ English and French. [ ]
A.
about, speak
B.
of, say
C.
of, speak
D.
about, say
【简答题】Traffic lights are very important for us. I think you know this. But do you know how they were born? Garrett A. Morgan was the father of traffic lights. He was an American. His family was very poor. H...
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