问答题

Many big cities in the world ____________ (正面临着淡水资源短缺的问题).

【参考答案】

are facing the problem of lack/shortage of water resources
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单项选择题
As is explained in the passage, snapshots refer to ______.
A．pictures taken at random
B．the shooting of birds by hunters
C．the whole process of taking pictures
D．pictures that were taken after careful preparation
填空题
To acquire quality education, increasing the relevance of education is the most important thing that governments should do.
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