Pokémon Go
 I wanna be the very best
 Like no one ever was
To catch them is my real test
To train them is my cause
 Pokémon, gotta catch them all!
          From “Pokémon Theme Song”
        Most people know where this song is from. It isn’tonly a favorite for kids, but also important part of manyadult’s childhood memories. What’s more, many peoplehave dreamed of having Pokémon in their real life, but itwas not possible until 2016. Finally, with a popular appcalled Pokémon Go, people are now one step closer to theirdream.               Within two days of its release（發行） , Pokémon Gobecame the biggest moneymaker at that time. It reachedmore than 10 million downloads within its first week andover 500 million worldwide（全球的） after just twomonths. The app helped local businesses grow and madepeople go out more often because of its location-based（定位的） technology. It may sound like a perfect game, butthis global phenomenon（現象） is not without any negativereviews（評論） .
         Many people were too focused on the game anddidn’t pay attention to where they were or where they weregoing, which caused lots of traffic accidents. Somegovernments started to warn the public with messages like“Not to Play Pokémon Go While Driving.” In addition,, theapp’s location-based technology caused several accidentsby leading players to dangerous places before they even hada chance to catch any Pokémon.
        Is Pokémon Go a dream come true or a nightmare（夢魘） ? One thing we can be sure of is that it is an app like noother, but it is not necessarily （未必） the very best since thehype（評論） has already died down.
【題組】4. What does “warn” mean?
(A) To agree to do something.
(B) To make someone feel warm.
(C) To have a fight with someone.
(D) To tell someone not to do something.