There are millions of people using mobile phones most

(3) there are millions of people using mobile phones, most people know
(4) about the mobile telecommunications industry and its technology. There are three types of
mobile phone. These are hand portables, pocket-sized hand portables and transportables. The
smallest and most popular are the pocket-sized hand portables. These work on rechargeable batteries,
which allow an (5) of up to 80 minutes’ conversation. Mobiles that are fitted permanently
in a vehicle do not (6) on separate batteries. They require an external aerial on the
vehicle. This can mean a stronger signal with clearer (7) . Transportables have a high
power capability and can be used (8) anywhere. They come with powerful battery
packs for longer, continuous use and may also be put (9) a vehicle, using its electrics. They ( 10)
to be bulkier than hand portables.
3

1. A. unless B. when C. while D. whether
2. A. make B. give C. take D. do
3. A. In addition B. Because C. As a result D. Although
4. A. little B. some C. few D. lots
5. A. amount B. account C. activity D. average
6. A. rely B. create C. carry D. insist
7. A. wave B. letter C. speech D. speed
8. A. mostly B. hardly C. most D. almost
9. A. on with B. into C. up with D. in to
10. A. used B. have C. tend D. are
IX. Read the text below and choose the best answer for each question after the text. (5 points)
SOME ANIMALS CAN PREDICT FUTURE EARTHQUAKES
A recent investigation by scientists at the U.S. Geological Survey shows that strange animal
behavior might help predict future earthquakes. Investigators found such occurrences in a ten-
kilometer radius of the epicenter of a fairly recent quake. Some birds screeched and flew about
wildly: dogs yelped and ran around uncontrollably.
Scientists believe that animals can perceive these environmental changes as early as several days
before the mishap.
In 1976, after observing animal behavior, the Chinese were able to predict a devastating quake.
Although hundreds of thousands of people were killed, the government was able to evacuate
millions of other people and thus keep the death toll at a lower level.
1. What prediction may be made by observing animal behavior?
2. Why can animals perceive these changes when humans cannot?