题目内容
（请给出正确答案）
[主观题]
The professor mentions two great figures in the field of biology. What are their common at
tributes in the professor's viewpoint？ [Clink on 2 answers.]
A．They always used the same well-known and trusted techniques.
B．They received wide public attention after their major contributions to biology.
C．They were both unknown during early stages of their careers and later gained widespread recognition.
D．Their theories and contributions stimulated the field of biology to a great extent.
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