麻醉状态下，随着麻醉的加深，脑电波的频率加快，波幅增大，并伴有脑电活动的突然改变，称为爆发性抑制
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Watch the video and answer the following questionsWhich of the following English words derive from Celtic languages?
A. crag(rock)
B. coombe (deep valley)
C. brat (badger)
D. tor(peak)
E. castle (fortified place)
F London
G. son
Which of the following English words derive from Latin?
A. altar
B. sing
C. mass
D. monk
E. psalm
F verse
G.July
which of the following suffixes derive from Germanic language?
A. ing
B. ion
C. er
D. ton
E. ly
F ham
G.ful
Which of the following English words belong to Old English?
A. some prepositions likein, on, into, by & from
B. kinship terms likedaughter, son
C. some nouns likeyouth, ground, field, friend, game, sun
D. some verbs likedrink, come, go, sing, like, love
E.and, the
F all the numbers
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