【单选题】A _____ records information about you during a Web surfing session such as what Web sites you visited, how long you were there, what ads you looked at, and what you bought.
【简答题】阅读理解。 A Stranger Saved My Dad You were there, walking in the street near the station of Pittsburgh, when the SUV hit my dad's bike. You had the courage to take his phone and call an ambulance (救护车), g...