What is someone who speaks both Spanish and English, for example, called?

Abraham Lincoln lived in which city in the 1840s and '50s, where his home still stands at Eighth and Jackson streets? Which sea between Australia and New Zealand is named for a Dutch explorer? Abigail and Betty hysterically name villagers as witches at the end of Act I of which 1953 play? In the Bible, Abimelech, Lamech and Cain are all guilty of which crime? About one hydrogen atom in 6,500 is which heavier isotope? About 1 male in 10,000 is born with which bleeding disorder, in which the blood lacks clotting factor VIII? About 10 percent of your body mass is which simplest element? Around 1000 AD, which people reached North America and named parts of it Helluland, Markland and Vinland?