听下面一段对话,回答第1至4题. 1.When did the British Museum open to the public? A.In 1753. B.In 1759. C.In 1756. 2.How many universities did the woman visit in London? A.Three. B.Four. C.Five. 3.What is the best time to visit London? A.Autumn. B.Winter. C.Summer. 4.What is typical of London,according to the man? A.Its universities. B.Its food. C.Its weather.