A) By its productivity C) By its impact on the environmet
B) By its sustainability D) By its contribution to economic growth
53. Specialisation and the effort to incease yields have esulted in________.
A) Localised pollution C) competition from overseas
B) the shrinking of farmland D) the decrease of biodiversity
54.What does the author think of traditional farming practices?
A)They have remained the same over the centuries
B)They have not kept pace with population growth
C)They are not necessarily sustainable
D)They are environmentally friendly
55.What will agriculture be like in the 21st century
A) It will go through radical changes
B) It will supply more animal products
C) It will abandon traditional farming practices
D) It will cause zero damage to the environment
56 What is the author’s purpose in writing this passage?
A) To remind people of the need of sustainable development
B) To suggest ways of ensuring sustainable food production
C) To adance new criteria for measuring farming proGREss
D) To urge people to rethink what sustainable agriculture is
Passage Two
Questions 57 to 61 are based on the following passage
The percentage of immigrants(including those unlawfully present) in the United states has been creeping upward for years. At 12.6 percent, it is now higher than at any point ince the mid1920s
We are not about to go back to the days when ConGREss openly worried about inferior races polluing America’s bloodstream. But once again we are wondering whether we have too many of the wrong sort fo necomers.Their loudest citecs argue that the new wave of immigrants cannot,and indeed do not want to, fit in as previous generations did.
We now know that these racist views were wrong.In time, Italians, Romanians
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