42. (A) dawn (B) fall (C) oath (D) hedge

50. What is the main idea of the passage? (A) The social media video is very informative and useful for viewers to do self-diagnosis. (B) Health diagnosis should be given by medical experts, not based on one symptom. (C) People with ADHD can have difficulty following through with multi-step tasks. (D) Avoiding tasks that require effort falls under the inattentive symptoms of ADHD.