News quiz: Derby champ, 'Nerd Prom' and more

• Mom's response to 'troll' triggers outpouring of social media support
• Ohio teen takes great-grandmother to senior prom
• Tough Marines let loose for 'Let it Go'
• Rare alien-looking 'goblin shark' found off Florida coast
• Woman killed in crash seconds after Facebook post about Pharrell's "Happy"

Think you're a news junkie? Test your knowledge of national and international headlines with these five questions. Don't forget to tell us how you did in the comments below!