A.its purpose, basis and contents B.its purpose, items and tasks C.its purpose, method and results D.its purpose, basis and assumptions
单项选择题The main purpose of this passage is to ()
A.tell the origin of intelligence tests B.explain the basic principle of intelligence tests C.describe the changes in the content of intelligence tests D.state the development of intelligence tests
单项选择题Which of the following is transparent()
A.Aluminium. B.Silver. C.Milk. D.Mineral water.