【正文】 mechanics of two keyboard instruments. D Music written for different keyboard instruments. 74 Why does the class meet in a studio? A To make a recording. B To see the instruments in the studioC To attend a concertD Because their classroom is not available. 75 What three features are mon to both the piano and the harpsichord? Click on 3 answers A Hammers B Strings C Keys D Plectrums E A frame 76 What does the professor say about the strings inside a piano? A They are arranged according to length. B They produce higher tones than the strings inside a harpsichord.C They all have the same thickness.D They are held in place by a piece of leather. 77 What will the students most likely do next? A Play a piece on the piano B Watch how a sound is produced on a harpsichord C Take a quiz about keyboard instruments D Compose a piece for a keyboard instrument 78 What is the discussion mainly about? A Variations in children’s writing ability B Children’s knowledge of written language C Classroom techniques for teaching children how to read C Differences between spoken and written language forms79 According to the discussion, what is the relationship between written and spoken language? A Written language is a way of representing spoken language B Written language develops independently of spoken language C Written language is more precise than spoken language C Written language requires a broader vocabulary than spoken language80 81 According to the discussion, which activity can help young children learn what written symbols represent? A Reciting the letters of the alphabet B Looking at many words in print C Attending school at an early age C Practicing forming letters on a page 82 What is “metalinguistic awareness”? A The knowledge of a number of different languages B An awareness of different approaches to language teaching C The ability to municate using language D An awareness of how language functions 83 What is the discussion mainly about? A Pesticides used by fruit farmers B The function of one type of chemical in fruit C The types of fruit people should avoid C How birds digest poisonous fruit 84 What method of spreading seeds does the class discuss? A Seeds are blown by the wind B Seeds stick to animal fur C Seeds are collected by farmers and planted as crops C Seeds are eaten by animals and deposited in the soil 85 What two benefits of glycoalkaloids does the professor mention? Click on 2 answers A They discourage animals from eating tomatoes before they ripen B They improve the taste of nightshade berries C They inhibit the growth of fungi on fruit D They give fruit an attractive color 86 What does the professor say about the taste of certain fruits than contain glycoalkaloids? A The fruits can taste bitter to people B The fruits taste sweet to most birds C The fruits are so distasteful that no animals eat then D The fruits have naturally evolved to have a milder flavor 87 What reason does the professor mention tor tomatoes going bad at the grocery store? A They are kept too cold B They contain too many glycoalkaloids C They are covered with a thick layer of wax D They do not have enough resistance to fungi 88 What is the discussion mainly about? A A different type of cloud formation B A type of seed that needs little water C An effort to reduce the amount of acid rain D A technique for increasing the quantity of rain 89 According to the discussion, what is the main consideration when choosing a seeding agent? A The direction of the wind B The temperature of the cloud C The size of the cloud D The types of chemicals in the cloud 90 What are super cooled clouds? A Clouds that produce ice storms B Clouds that have been treated with dry ice C Clouds that are below freezing in temperature D Clouds that have moved from a hot a cold location 91 What happens when dry ice or silver iodide is added to a cloud? A The water in the cloud turns into snow B The cloud bees larger C The cloud releases raindrops D The water in the cloud bees warmer 92 What is preventing the largescale use of cloud seeding? Click on 2 answers A A shortage of seeding agents B A lack of knowledge about the effect of cloud seeding on surrounding areas C A lack of laws that regulate cloud seeding D A shortage of pilots trained in cloud seeding