... ĐỂ THI THỬ TỐT NGHIỆP THPT MÔN TIẾNG ANH- ĐỀ SỐ 7 (Chương trình chuẩn và nâng cao) Read the passage ... movements stood for things and ideas. People might move their forefingers across their lips. This meant, “ You are not telling the truth.” They might taps their chins with three fingers. This meant ... special language. Using this language, they could share thoughts and ideas with others. The language they used was a language without sound. It was a sign language. How did this sign language work?...