Choose TWO letters, A-E.Which TWO of these statements describe Howe’s experimen

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问题 Choose TWO letters, A-E.
Which TWO of these statements describe Howe’s experiment with 8-12-year-olds?
A The children were assessed on their ability to understand a scientific problem.
B All the children were working in mixed-ability groups.
C The children who were the most talkative made the least progress.
D The teacher helped the children to understand a scientific problem.
E The children were given a total of three tests, at different times. [br]

选项 A、 
B、 
C、 
D、 
E、 

答案 A

解析 PARAGRAPH E ’Howe compared the progress of 8-12 year-old children in understanding what influences motion down a slope.’(A) Howe and colleagues created two groups according to a pre-test; a post test was given immediately after the sessions and another four weeks later.(E) The children did not work in mixed-ability groups(B); the talkativeness of the children is not mentioned(C); the teacher was not actively involved(D).
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