单项选择题
A．should test only opinions B．should always be written C．has changed since the Middle Ages D．is given only in factories
28（）A．numberB．amountC．manyD．much
单项选择题28（）
A．number B．amount C．many D．much
Modern industry must have developed （）A．before the Midd...
单项选择题Modern industry must have developed （）
A．before the Middle Ages B．around the 19th century C．in Greece or Rome D．machines to take tests
Which of the following statements is NOT true according...
单项选择题Which of the following statements is NOT true according to the passage（）
A．People are often satisfied with their life. B．Life is less interesting for older people. C．Adults are freer to do what they want to do. D．Adults should no longer rely on others.
