The best time to visit Vietnam is（）
A. from May to August
B. from February to April
C. from August to October
D. from September to November
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What’s the aim of the Belt and Road（）
A. To enhance cooperation and connectivity among involved countries and regions
B. To use the historic symbol of the ancient Silk Road
C. To raise the flag of peace and development
D. To develop the economic partnership with nations along the line positively
What are the four great inventions of China（）
A. Compass
B. Gunpowder
C. Paper-making technique
D. Printing technique
Drinking water of Saudi Arabia comes from（）
A. seawater desalination
B. surface water
C. groundwater
D. imported water
What is the Silk Road Spirit（）
A. Peace and cooperatio
B. Openness and inclusiveness
C. Mutual learning
D. Mutual benefit
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