Questões de Concurso
Sobre verbos modais | modal verbs em inglês
Foram encontradas 355 questões
Answer question according to TEXT 1 below, adapted from http://news.bbc.co.uk/2/hi/americas/8606466.stm (accessed on April 7th, 2010) .
TEXT 1
At least 200 people have died in the Brazilian state of Rio de Janeiro after another storm. This is arguably the worst torrential rain for decades, causing flooding and landslides. Our website readers in Rio de Janeiro have been sharing their experiences.
Comment 1 - I’ve never seen such chaos. We weren’t prepared for this, even though we were warned that a big storm was about to come. Newspapers are saying that the reason for the catastrophe is the garbage. Well it may have been. We need to teach recycling at schools and community groups, otherwise we will have more disasters like this. (Lia, Niterói)
Comment 2 - Today I witnessed Rio de Janeiro on the brink of collapse. I ventured out around midday, just as the electric power blacked out in my neighbourhood. Three hours later, looking out of my office window, the city still reminded me of a war zone. “What´ve we done to deserve this?”, I thought. It’s night time now and I haven’t been able to return home. I might do so tomorrow. (José, Rio)
Comment 3 - Worldwide, we are seeing more and more
climate instability. The deserts of central Asia are growing,
while areas of the US (and now Rio) are drenched. The lakes
in Minnesota have never thawed this early, at any time in the
recorded record. The icecaps will be history, and islands
around the world are disappearing under the surf. The oceans
are warming, the coral reefs are dying. How much more
evidence do we need of global warming? (João, Brasília)
Internet: <www.scielo.br> (adapted).
The modal “should" in the fragment (L.34) is used to express the idea of obligation or duty.
Internet: <tesl-ej.org> (adapted).
Based on the text, judge the item below.
The modal verbs “can” and “should” (L.24) are synonymous.
Africa is not the front line in the war against terror, but it soon could be.
Harry McCracken, PC World
Monday, October 19, 2009 10:00 AM PDT
Reading about a new operating system can tell you only so much about it: After all, Windows Vista had far more features than XP, [CONJUNCTION] fell far short of it in the eyes of many users. To judge an OS accurately, you have to live with it. Over the past ten months, I've spent a substantial percentage of my computing life in Windows 7, starting with a preliminary version and culminating in recent weeks with the final Release to Manufacturing edition. I've run it on systems ranging from an underpowered Asus EeePC 1000HE netbook to a potent HP TouchSmart all-in-one. And I've used it to do real work, not lab routines. Usually, I've run the OS in multiboot configurations with Windows Vista and/or XP, so I've had a choice each time I turned the computer on: [MODAL] I opt for Windows 7 or an
older version of the OS? The call has been easy to make, because Win 7 is so pleasant to use.
So why wouldn't you want to run this operating system? Concern over its performance is one logical reason, especially since early versions of Windows Vista managed to turn PCs that ran XP with ease into lethargic underperformers. The PC World Test Center's speed benchmarks on five test PCs showed Windows 7 to be faster than Vista, but only by a little; I've found it to be reasonably quick on every computer I've used it on - even the Asus netbook, once I upgraded it to 2GB of RAM. (Our lab tried Win 7 on a Lenovo S10 netbook with 1GB of RAM and found it to be a shade slower than XP; for details see "Windows 7 Performance Tests.").
Here's a rule of thumb that errs on the side of caution: If your PC's specs qualify it to run Vista, get Windows 7; if they don't, avoid it. Microsoft's official hardware configuration requirements for Windows 7 are nearly identical to those it recommends for Windows Vista: a 1-GHz CPU, 1GB of RAM,
16GB of free disk space, and a DirectX 9-compatible graphics device with a WDDM 1.0 or higher driver. That's for the 32-bit version of Windows 7; the 64-bit version of the OS requires a 64-bit CPU, 2GB of RAM, and 20GB of disk space.
Fear of incompatible hardware and software is another understandable reason to be wary of Windows 7. One unfortunate law of operating-system upgrades - which applies equally to Macs and to Windows PCs - is that they will break some systems and applications, especially at first.
Under the hood, Windows 7 isn't radically different from Vista. That's a plus, since it should greatly reduce the volume of difficulties relating to drivers and apps compared to Vista's bumpy rollout. I have performed a half-dozen Windows 7 upgrades, and most of them went off without a hitch. The
gnarliest problem arose when I had to track down a graphics driver for Dell's XPS M1330 laptop on my own - Windows 7 installed a generic VGA driver that couldn't run the Aero user interface, and as a result failed to support new Windows 7 features such as thumbnail views in the Taskbar.
The best way to reduce your odds of running into a showstopping problem with Windows 7 is to bide your time. When the new operating system arrives on October 22, sit back and let the earliest adopters discover the worst snafus. Within a few weeks, Microsoft and other software and hardware companies will have fixed most of them, and your chances of a happy migration to Win 7 will be much higher. If you want to be really conservative, hold off on moving to Win 7 until you're ready to buy a PC that's designed to run it well.
Waiting a bit before making the leap makes sense; waiting forever does not. Microsoft took far too long to come up with a satisfactory replacement for Windows XP. But whether you choose to install Windows 7 on your current systems or get it on the next new PC you buy, you'll find that it's the unassuming, thoroughly practical upgrade you've been waiting for ? flaws and all.
(Adapted from http://www.pcworld.com/article/172602/windows_7_revi...)
CAUTION
PROPERHANDLINGOFTHE FINECARTRIDGES
Handle the FINE Cartridges of this product properly, observing
the cautions noted below. Improper handling causes
malfunction or other problems in the product, as well as
damage to the FINE Cartridges.
Note:
1) When you install the FINE cartridges in the product, insert
the FINE Cartridges into the FINE Cartridge Holder
carefully not to knock them against the sides of the holder.
Also be sure to install them in a well-lit environment.
For details, refer to your setup sheet.
2) Do not attempt to disassemble or modify the FINE
cartridges.
3) Do not handle the FINE Cartridges roughly such as
applying them excessive pressure or dropping them.
4) Do not rinse or wipe the FINE Cartridges.
5) Once you have installed the FINE Cartridges, do not
remove them unnecessarily.
(Taken from Canon Inc. 2008 - Printed in Vietnam)
For your protection, please read these safety
instructions completely before operating the appliance, and
keep this manual for future reference.
Carefully observe all warnings, precautions and
instructions on the appliance, or the one described in the
operating instructions and adhere to them.
POWER SOURCES - This set should be operated
only from the type of power source indicated on the marking
label. If you are not sure of the type of electrical power supplied
to your home, consult your dealer or local power company. For
those sets designed to operate from battery power, or other
sources, refer to the operating instructions.
OBJECTAND LIQUID ENTRY - Never push objects
of any kind into the set through openings as they may touch
dangerous voltage points or short out parts that could result in
a fire or electric shock. Never spill liquid of any kind on the set.
ATTACHMENTS - Do not use attachments not
recommended by the manufacturer, as they may cause
hazards.
CLEANING - Unplug the set from the wall outlet
before cleaning or polishing it. Do not use liquid cleaners or
aerosol cleaners. Use a cloth lightly dampened with water for
cleaning the exterior of the set.
OVERLOADING - Do not overload wall outlets,
extension cords or convenience receptacles beyond their
capacity, since this can result in fire or electric shock.
ACCESSORIES - Do not place the set on an
unstable cart, stand, tripod, bracket, or table. The set may
fall, causing serious injury to a child or an adult, and serious
damage to the set. Use only a cart stand tripod, bracket, or
table recommended by the manufacturer.
WATER AND MOISTURE - Do not use power-line
operated sets near water - for example, near a bathtub,
washbowl, kitchen sink, or laundry tub, in a wet basement, or
near a swimming pool, etc.
SERVICING - Do not attempt to service the set
yourself as opening or removing covers may expose you to
dangerous voltage or other hazards. Refer all servicing to
qualified service personnel.
SAFETY CHECK - Upon completion of any service
or repairs to the set, as the service technician to perform
routine safety checks (as specified by the manufacturer) to
determine that the set is in safe operating condition.
(Adapted from SONY manual - Sony Corporation - 2000 - Printed in Japan).


Cell Phones: Are they dangerous?
Do you have a cell phone? Do you use it a lot? If the answer to these questions is yes, you should read the following information very carefully.
If you keep on using a cell phone, it will probably cause premature ageing, which might be rather difficult to get over. At least this is what most scientists claim. Low-level radiation from the phone may heat up body cells, damaging skin and making it look slightly lined and tired. Scientists say that if you expose cells to the radiation from a cell phone, the natural process that repairs your skin will probably be affected. Furthermore, radiation produces mutations in the cells and these mutations could be related to other health problems.
Cell phone users have also found out that if they use their phone for a long time they feel other symptoms such as fatigue and memory loss. The fatigue may be caused because, when using phones, people suffer an involuntary speeding up of their heart beat. Apart from that, nearly two out of three people interviewed complained of regular headaches from using their phones, although this may be due to bad posture rather than radiation emissions.
The most surprising fact discovered by researchers is that people exposed to the radiation of a cell phone for 45 minutes go to the bathroom twice as much as usual. This proves that radiation has a biological effect on humans.
So if I were you, I would definitely think twice before using a cell phone if I looked in the mirror and saw wrinkles on my face, felt fatigue, had trouble remembering things, or if I started using my bathroom more often than I used to.
The underlined words in the text are all examples of:


















