小红家有一块L形的菜地,要把L形的菜地按如图所示分成两块面积相等的梯形,种上不同的蔬菜.这两个梯形的上底都是a m,下底都是b m,高都是(b-a) m. (1) 求小红家这块L形菜地的面积.(用含a、b的代数式表示) (2) 当a=10,b=30时,求小红家这块L形菜地的面积. 答案:解: 2×12×(a+b)(b−a)= (b2−a2) m2
解:当a=10,b=30时,原式=302-102=800(m2). 所以小红家这块L形菜地的面积为800m2
Research at the
University of Liverpool, UK, has found that Shakespeare’s language stimulates
positive brain activity.
Shakespeare uses a linguistic(语言的)technique known as functional change that
involves, for example, using a noun to serve as a verb.Researchers
found that this technique allows the brain to understand what a word means
before it understands the function of the word within a sentence.This
process causes a sudden peak in brain activity and forces the brain to work
backwards in order to fully understand what Shakespeare is trying to say.
Professor Philip Davis,
from the university’s School of English, said: “The brain reacts to reading a
phrase such as ‘he godded me’ from the tragedy of Coriolanus, in a similar way
to putting a jigsaw puzzle(拼图玩具)together.If it is easy to see which
pieces fit together you become bored of the game.But if the pieces
don’t appear to fit, when we know they should, the brain becomes excited.By
throwing irregular words into seemingly normal sentences, Shakespeare surprises
the brain in a manner that produces a sudden burst of activity — a sense of
drama created out of the simplest of things.”
Experts believe that
this heightened brain activity may be one of the reasons why Shakespeare’s
plays have such a dramatic impact on their readers.
Professor Neil Roberts,
from the university’s Magnetic Resonance and Image Analysis Research Center,
and Professor Davis, together with Dr Guillaune Thierry, from the University of
Wales, UK, monitored 20 participants using an electroencephalogram (EEG) as
they read selected lines from Shakespeare’s plays.
“The brain signal is
relatively stable when we understand the meaning of a word but when the word
changes the grammar of the whole sentence, brain readings suddenly peak.The
brain is then forced to retrace its thinking process in order to understand
what it is supposed to make of this unusual word,” explains Professor Roberts.
1.The
research conducted by the professors has showed that ___________.
A.Shakespeare
uses functional change to mislead readers
B.Shakespeare’s
language excites positive brain activity.
C.Shakespeare’s
plays have a dramatic effect on their readers.
D.Shakespeare’s
language makes the brain signal relatively stable
2.Which
of the following words can replace the underlined pronoun “it” in the 2nd
paragraph?
A.technique
B.word
C.brain C.sentence
3.In
the 3rd paragraph, the example of a jigsaw puzzle is used here to
state___________.
A.the
function of Shakespeare’s linguistic technique
B.a
sense of drama created by playing the game
C.the
Shakespeare’s thinking process
D.the
brain’s reaction to reading a book
4.Based
on the research, Shakespeare’s plays have a great effect on their reader lies
in_______.
A.language
used in
plays
B.characters showed in works
C.brain
activity increased in reading D.thinking
process when writing