根据以下材料，回答 40～43 问题。During a television play the sound man must be ready to make every sound as it is needed．Sound effects are of three kinds：real，imitated and recorded．Real sounds are those of doorbells，telephone bells，and other small objects easy to keep in a studio． But the sound man must imitate many sounds． For bacon fryin9，he crumples cellophane paper．A long sheet of metal hanging in a doorway makes thunder·He taps one rubber sink plunger and then another on a table to imitate a horse walking on pavement． For a horse galloping along a gravel road，the sound man can use the two halves of a coconut，pounding each in turn very fast on the table．Recorded sound effects are used for noises he cannot himself produce offstage．He pays records for such sounds as a rooster crowing， a train leaving a station， and a baby crying．The sound man is an important part of any television production．第 40 题 The sound man is important because he________

2．I have two good friends． One is Han Mei， and _______is Li Ping．

AThis is the twins' bedroom． It is a nice room． The two beds look the same．This bed is Lily's and that one is Lucy's． The-twins have two chairs and one desk． Their clock， books and pencil cases are on the desk． Their backpacks are behind the chairs Some nice flowers(花) are on the desk． Some pictures are on the wall． Is there a base-ball? Yes， it，s under Lily's bed． The bedroom is very nice．( )21． The twins are ________ ．

A sound signal of seven short blasts and one long blast given with the vessel’s sound system is（）.

A general difference between phonetics and phonology is that phonetics is focused on the production of speech sounds while phonology is more concerned with how speech sounds distinguish meaning.

In Africa Languages, there is a close ____ between sounds and letters. ( )

Which of the following is used to describe the speech errors induced by the transposition of two sounds as intons of soilandsons of toil?

A technician has installed Windows Vista Ultimate and is setting up the Media Center. When the technician goes to watch TV, Media Center displays an error of no TV tuner installed. The TV tuner is installed with the correct drivers. Which of the following is the solution to the problem?（）

Which of the following internal storage devices has the GREATEST storage capacity and is WORM media?（）

（）is guaranteed by the full market supply and just-in-time logistics.

（）is guaranteed by the full market supply and Just in time ( JIT ) .

Router VE1 has just received a packet and needs to route it. What two actions must this router take in order to route incoming packets? (Choose two)