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判断下列划线句是同位语从句,还是定语从句。 1. The news that we had successfully sent up another communication satellite(卫星) spread throughout the world. 2. That ’ s the best piece of news that I ’ ve heard . 3. Is there any idea that can help solve my problem ? 4. I ’ ve no idea that my parents have expectations of me . 5. For some people, the possibility that there are aliens(外星人 ) doesn ’ t exist at all.