Scientists are carrying out experiments to test the effectiveness of

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1. (2023高一上·信阳开学考) Scientists are carrying out experiments to test the effectiveness of the new medicine. （写出划线部分在句中所作的成分）

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1. (2023高一上·信阳开学考) Scientists are carrying out experiments to test the effectiveness of the new medicine. （写出划线部分在句中所作的成分）