15. The Food and Agriculture Organisation has counted more than 300 agricultural pests which
A are no longer responding to most pesticides in use.
B can be easily controlled through the use of pesticides.
C continue to spread disease in a wide range of crops.
D may be used as part of bio-control's replacementof pesticides.
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14. The use of pesticides has contributed to
A a change in the way ecologies are classified by agroecologists.
B an imbalance in many ecologies around the world.
C the prevention of ecological disasters in some parts of the world.
D an increase in the range of ecologies which can be usefully farmed.
13. Why do Japanese students tend to achieve relatively high rates of success in maths?
A It is a compulsory subject in Japan.
B They are used to working without help from others.
C Much effort is made and correct answers are emphasised.
D There is a strong emphasis on repetitivelearning.
12. How do schools deal with students who experiencedifficulties?
A They are given appropriate supplementary tuition.
B They are encouraged to copy from other pupils.
C They are forced to explain their slow progress.
D They are placed in a mixed-ability class.
11. When a new mathstopic is introduced,
A students answer questions on the board.
B students rely entirely on the textbook.
C it is carefully and patiently explained to the students.
D it is usual for students to use extra worksheets.
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