[填空题]As previously ______ (state), these unanswered questions suggest areas that are in need of further study.

[单项选择]

Q: Which of the following is one of the unanswered questions（）

A. Whether there is difference between school subjects.
B. Whether physical activity is linked to academic performance.
C. Whether a comparison should be made with the control.
D. Whether the amount of activity affects academic performance.

[单项选择]What did the man assume previously
A. She would go to the bookstore.
B. She would not go to the bookstore.
C. She would go to the bookstore later.
D. She would go to another bookstore.

[填空题]que tu rendes ( )

[填空题]The State of Rondonia and Para State belong to the west Amazon.

[填空题]Why dig agriculture, which was previously resisted violently, finally prevail among the pastoral nomads as a way of life

[填空题]Why did agriculture, which was previously resisted violently, finally prevail among the pastoral nomads as a way of life

[填空题]

Green Growth

A．The enrichment of previously poor countries is the most inspiring development of our time. It is also worrying. The environment is already under strain. What will happen when the global population rises from 7 billion today to 9.3 billion in 2050, as demographers(人口统计学家) expect, and a growing proportion of these people can afford goods that were once reserved for the elite Can the planet support so much economic activity
B．Many policymakers adopt a top-down and Western-centric approach to such planetary problems. They discuss ambitious regulations in global forums, or look to giant multinationals and well-heeled (富有的) NGOs to set an example. But since most people live in the emerging world, it makes sense to look at what successful companies there are doing to make growth more sustainable.
C．A new study by the World Economic Forum (WEF) and the Boston Consulting Group (BCG) identifies 16