题目内容
（请给出正确答案）
[主观题]
What is the finding of the Canadian researchers？A) Encouraging positive thinking many
What is the finding of the Canadian researchers？
A) Encouraging positive thinking many do more harm than good.
B) There can be no simple therapy for psychological problems.
C) Unhappy people cannot think positively.
D) The power of positive thinking is limited.
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