Are these actions done by humans, elephants or both? Underline supporting information in the article. (Những hành động sau đây được làm bởi con người, voi hay cả hai? Gạch chân những ý giúp bạn làm bài trong bài đọc) 1. Speak with words and language 2. Spread ears to show anger or aggression 3. Shake their head to disagree 4. Shake their head to show they are happy 5. Touch each other to show their feelings 6. Laugh 7. Have a sense of humor 8. Copy sounds they hear