Foram encontradas 125 questões.
Who Sleeps?
Reptiles, birds and mammals all sleep. Some fish and amphibians reduce their awareness but do not ever become unconscious like the higher vertebrates do.
Insects do not appear to sleep, although they may become inactive in daylight or darkness.
By studying brainwaves, it is known that reptiles do not dream. Birds dream a little. Mammals all dream during sleep. Whales and dolphins are “conscious breathers” and because they need to keep conscious while they sleep in order to breathe, only one half of their brain sleeps at a time.
GLOSSARY:
awareness = consciência
“Birds dream a little”, means that
Provas
Questão presente nas seguintes provas
Na figura, !$ \overline {MN} // \overline{BC}. !$ Se !$ AB \, = \, 30 cm, !$ então !$ \overline{MB} !$ mede, em cm,
Provas
Questão presente nas seguintes provas
A aresta da base de um prisma quadrangular regular mede 2 cm. Se a diagonal desse prisma mede !$ 2\sqrt{11} !$ cm, sua altura, em cm, mede
Provas
Questão presente nas seguintes provas
Uma certa massa de um gás ideal ocupa um volume de 3 L, quando está sob uma pressão de 2 atm e à temperatura de 27 ºC. A que temperatura, em ºC, esse gás deverá ser submetido para que o mesmo passe a ocupar um volume de 3,5 L e fique sujeito a uma pressão de 3 atm?
Provas
Questão presente nas seguintes provas
Uma mosca pousa sobre um disco que gira num plano horizontal, em movimento circular uniforme, executando 60 rotações por minuto. Se a distância entre a mosca e o centro do disco é de 10 cm, a aceleração centrípeta, em !$ \pi^2 !$ cm/s2, a qual a mosca está sujeita sobre o disco, é de:
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Questão presente nas seguintes provas
São negativas, no 4º quadrante, as funções
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Questão presente nas seguintes provas
I always wanted a car and thought that having one would make my life easier. I still remember the day I bought the car - my car! - and drove it home. It was the happiest day of my life... and then everything went wrong.
First of all, I got a ticket for speeding. I was so excited about driving my new car that I didn’t realize how fast I was going. Later, when I got home, there was nowhere to park on the street. I looked for parking for almost thirty minutes. Finally, I found a place – six blocks from my house! The next morning, I decided to drive to school. The traffic was terrible and I was fifteen minutes late for class. All this happened in the first twenty-four hours of owning a car!
By the end of the first year, I was almost $2,000 in debt. I needed money for car payments, gas and insurance. It was crazy! In the end, I had to sell the car to pay my bills.
So what’s the moral of the story? If you don’t need a car, don’t buy one. It would be a terrible mistake!
In “... I didn’t realize how fast I was going.”, the underlined word can be replaced by
Provas
Questão presente nas seguintes provas
Jade Barbosa lost her mother when she _____ just nine years old. At thirteen she had to leave her father and brother in Rio to train at the Curitiba training center. At just sixteen she is the new star of Brazilian gymnastics. In the Pan American Games she won one gold medal, one silver and one bronze.
(Taken from Maganews – October 2007)
Complete the text with the missing verb.
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Questão presente nas seguintes provas
“These are some of the questions that parents ask themselves as
their children grow up and move on:
Will they sleep through the night?
Will they learn to read?
Will they get good grades?
Will they avoid drugs?
Will they be responsible about sex?
Will they get into a decent school?
Will they go to college?”
“move on”, is closest in meaning to
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Questão presente nas seguintes provas
Se x e y são números reais positivos, !$ co \,\, log_2 \,\, { \large 1 \over 32} \, = \, x, !$ e log y 256 = 4 , então x + y é igual a
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Questão presente nas seguintes provas
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