Read the text:
BRIGHT PROSPECTS
Energy: Solar power is in the ascendant
Unlike fossil fuels, which produce significant amounts of pollution and enormous amounts
of greenhouse gases, the sun's energy is clean and its supply virtually limitless. In just one hour
the Earth receives more energy from the sun that human beings consume during an entire year.
According to America's Department of Energy, solar panels have the potential to provide for all of
its current electricity needs.
Yet since they were invented more than five decades ago, photovoltaic solar cells - devices
made of semiconductor materials that convert light into electricity - have generated much
publicity but little energy. In 2006 solar panels produced only 0.04% of the world's electricity,
according to the International Energy Agency. Solar panels have few customers and the problem is
their price. Sunshine is free, but converting it into electricity is not. At present, solar power is at
least two to three times as expensive as the typical electricity generated in America.
Even so, many people believe that solar power will be very popular one day, maybe soon.
Decades of research have improved the efficiency of silicon-based solar cells, and the price of
solar power is expected to be competitive within three to eight years. Wal-Mart, the American
retail giant, is placing solar systems on the roofs of many of its supermarkets. Besides producing
favorable publicity, the appeal of using solar power is obvious...and bright.
01. Answer these questions in Portuguese according to the text:
a) Cite duas consequências do uso excessivo de combustíveis fósseis?
b) A luz natural do sol é gratuita. O que encarece a utilização?
02. Answer these questions in English according to the text:
a) What kind of energy does the sun supply?
b) How much energy does the Earth receive from the sun in just one hour?
c) What is the function of the semiconductor materials in the photovoltaic solar cells?
d) Where is Wal-Mart placing solar systems?
03. Match the columns:
(a) You weren't in the park yesterday,
(b) He's famous,
(c) Your brother will come for lunch,
(d) I'm good at drawings,
(e) My mother prepared our breakfast,
( ) aren't I?
( ) won't he?
( ) were you?
( ) didn't she?
( ) isn't he?
04. Mark the correct alternative:
a) Tom and Paul have studied together since last year,___________?
( ) haven't they
( ) don't he
( ) won't they
( ) didn't they
b) Let's talk, ?_________?
( ) don't we () won't they () shall we ( ) didn't he
05. Fill in the blanks.
a) Don't touch that vase,___________?
b) That is a big mistake,____________?
c) The teacher likes chocolate,__________?
d) You bought a new car last week,____________?
e) There isn't juice in the jar,______________?
06. Politics is a science,____________?
a) weren't they
b) isn't it
c) wasn't it
d) won't they
e) wouldn't he
07. Complete the sentences with question-tags and then mark the correct alternative. (1,0)
I - I'm afraid I'm a little late,_______________?
II - She left at 10 o'clock,_________________?
III - He likes apple pie,____________________?
a) am I - doesn't she - didn't he
d) aren't I - didn't she - doesn't he
b) aren't I – didn't she - didn't he
e) aren't I - doesn't she – like he
c) I am - did she - does he
08. (FIEO - SP) I'm happy,________?
( a) aren't you
( c) aren't I
( e) are you
( b) am I
( d) am not 1
09. (UFAL) Your grandchildren live in China,____________?
a) doesn't it
c) does she
b) don't they
d) do them
e) doesn't he
10) (ITA) Assinalar a alternativa que contenha as formas interrogativas corretas ("question tags”)
para as orações a seguir:
I) The shops at the shopping center close at 10 p.m.,_____________?
II) It's a lovely day,____________?
III) There was something wrong with you,________________?
IV) She has met my boyfriend,_______________?
a) isn't it - is it - is there - hasn't she
b) isn't it - is it - is it isn't she
c) aren't they - isn't it - wasn't there isn't she
d) don't they - isn't it - wasn't there - hasn't she
e) don't they - is it - was there - hasn't she
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Resposta:
não da pra intende essa pergunta ela esta em inglês
deusetudo570:
Pq as perguntas são no inglês msm
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