Escribe los nombres de los días de la semana que faltan:

 Em geral, os nossos tupinambás ficam bem admirados ao ver os franceses e os outros dos países longínquos terem dado trabalho para buscar o seu arabotã, isto é, pau-brasil. Houve uma vez um ancião da tribo que me fez esta pergunta: "Por que vindes vós outros, mairs e perós (franceses e portugueses), buscar lenha de tão longe para vos aquecer? Não tendes madeira em vossa terra?"

O viajante francês Jean de Léry (1534 - 1611) reproduz um diálogo travado, em 1557, com um ancião tupinambá, o qual demonstra uma diferença entre a sociedade europeia e a indígena no sentido

A todo instante, raios cósmicos atingem a atmosfera terrestre e colidem com núcleos atômicos. Dessas interações, é formada uma cascata de partı́culas que permeia nossa atmosfera. Muitas dessas partı́culas são instáveis, o que significa que, após determinado intervalo de tempo (tempo de vida), elas decaem. Seja um múon criado a uma altitude de 100 km e que se movimenta com uma velocidade vertical em direção ao solo de 0,9999c.

Sabendo que seu tempo de vida, em repouso, é de 2,2

µsa mı́nima altitude que essa partı́cula atinge, aproximadamente, é de

Teens, tech and tides of history: new gadgets can be hard to swallow 

Humans seem to take very well to inventions that simply make everyday life easier and more convenient

– the light bulb, the flush toilet and sliced bread, for instance. However, inventions that alter the way

we communicate and entertain ourselves seem harder for our species to swallow gracefully.

“Radio is a medium of entertainment which permits millions of people to listen to the same joke at the

[5]  same time, and yet remain lonesome” - T.S. Eliot*, a student of alienation, declared in the early days

of the wireless. This impulse that new is worse, when combined with the eternal concern about “kids

today”, goes far in explaining why grown-ups worry so much about the weird things kids today do with

technological gadgets and gizmos.

As Eliot imagined that listening to songs and gags at home instead of in theaters, pubs and parks

[10]  would be a sad, isolating escapade, I can’t see how a virtual community can be a real community;

how chatting with someone online is like hanging out with a neighbor, or how “IMing” is meaningful

communication. I can’t believe that reality television, video games or the search for the coolest ring

tone are proper substitutes for, well, anything.

In today’s society, teens are inundated with gadgets. Most teenagers would probably admit their days

[15]  are filled with text messaging friends, talking on their cell phones, playing electronic games, listening

to MP3 players, blogging on MySpace, watching television, surfing the Internet or doing any number of

other activities involving media technology. Unfortunately, most of these electronic activities increase

teens’ individualistic behavior by lessening their opportunity to have face-to-face relationship building

time.

[20]  Some parents feel they cannot limit their child’s use of electronic gadgets for many reasons. Perhaps

the electronic device is being used to keep track of a teen’s whereabouts, the item was a gift, the teen

bought the gadget himself or parents say they feel hypocritical because they are modeling the very

behavior they’re asking their kids to stop doing. Still, these technological concerns should not hinder

a parent from helping their child socialize and participate in outdoor activities when it comes to media

[25]  madness.

I have a large measure of confidence that future archeologists and historians will conclude that

innovations such as a code-speak called “Instant Messaging”, or a music box called “iPod” or a makebelieve

room called “MySpace” inexorably set us on a path of alienation and individualism. 

DICK MEYER www.cbsnews.com 

The picture illustrates the impact of technological innovations in our days.

The statement that best conveys the meaning of this image is:

Leia as informações abaixo para responder à questão. Jorge quer fazer um jardim gramado no seu quintal e protegê-lo com uma cerca. Na malha quadriculada a seguir, a parte com grama foi representada na cor cinza e a cerca está indicada com o fio mais grosso. Cada quadradinho possui 1 m 2.

Grama colocada! Agora, Jorge precisa proteger o jardim como indicado pelo traço mais grosso na figura. Quantos metros de cerca ele precisará?