题目内容
（请给出正确答案）
[主观题]
We can infer from the word "ideal" in the last paragraph that ______.A．researchers' design
We can infer from the word "ideal" in the last paragraph that ______.
A．researchers' design is too unrealistic
B．everyone dreams an ideal world they can test
C．people over 15 receiving tests once a year is just what researchers conceived
D．it is impossible for everyone over 15 to test once a year
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