Sức mạnh của các axit và các căn cứ được đo bằng cách sử dụng một số quy mô được biết đến như pH, một phép đo đại diện cho số của các ion hiđrô trong dung dịch. pH được đo với một mét pH hoặc với dải giấy đó có các chỉ số màu sắc. | 44 Delta s Key to the Next Generation TOEFL Test TEST 1 Reading Section Directions The Reading section measures your ability to read and understand passages in English. You will read three passages and answer questions about them. For most questions you will choose the one best answer of four possible answers. These questions are worth one point each. The last question in each set is worth more than one point. The directions for this question indicate how many points you can receive. Some passages have one or more words in bold type. For these bolded words you will see a definition or explanation in a glossary at the end of the passage. Answer all questions about a passage on the basis of what is stated or implied in that passage. You have 60 minutes to read the passages and answer all of the questions. Allow approximately 20 minutes to work on each passage. Test1 Delta s Key to the Next Generation TOEFL Test 447 Test The Art of Theater The means by which an art form presents its message is referred to as the medium. Thus sound produced by instruments or human voices is the medium of music. Paint on canvas or paper is the medium of painting. For literature the medium is written language. For theater it is a story performed by actors on a stage. Drama is sometimes seen as a branch of literature because plays like literature are often printed in book form. However there is an important difference between the two forms. Unlike a novel a play is written to be performed and the script of a play is not a finished work it is an outline for a performance. The physical production of the play the scenery lighting and costumes will affect the performance and so will the actors. How the actors interpret their roles greatly influences the play s effect on the audience. The basic encounter in theater is between the performers and the audience. This is a special type of encounter because the performers are playing other people characters. Moreover the characters are part of a .
