Recent technological advances in manned and unmanned undersea vehicles
along with breakthroughs in satellite technology and computer equipment have
overcome some of the limitations of divers and diving equipment. With a
vehicle, divers often became sluggish and their mental concentration was limited.
Because of undersea pressure that affected their speech organs, communication
among divers was difficult or impossible. But today, most oceanographers make
direct observations by means of instruments that are lowered into the ocean,
from samples taken from the water, or from photographs made by orbiting
satellites. Director observations of the ocean floor are made not only by
divers but also by deep-diving submarines and aerial photography. Some of the
submarines can dive to depths of more than seven miles and cruise at depths of
fifteen thousand feet. In addition, radio- equipped buoys can be operated by
remote control in order to transmit information back to land- based
laboratories, often via satellite. Particularly important are date about water
temperature, currents and weather. Satellite photographs can show the
distribution of sea ice, oil slicks, and cloud formations over the ocean. Maps
created from satellite pictures can represent the temperature and the color of
the ocean’s surface, enabling researchers to study the ocean currents and
weather. Furthermore, computers help oceanographers to collect and analyze data
from submarines and satellites. By creating a model of the ocean’s movement and
characteristics, scientists can predict the patterns and possible effects of
the ocean on the environment.
Recently, many oceanographers have been relying more on satellite is and computers than on research ships of even submarine vehicles because they can supply a greater range of information more quickly and more efficiently. Some of mankind’s most serious problems, especially those concerning energy and food. May be solved with the help of observations made possible by this new technology.
Recently, many oceanographers have been relying more on satellite is and computers than on research ships of even submarine vehicles because they can supply a greater range of information more quickly and more efficiently. Some of mankind’s most serious problems, especially those concerning energy and food. May be solved with the help of observations made possible by this new technology.
1.
With what topic is the passage primarily
concerned?
a.
Technological advances in oceanography
b.
Communication among divers
c.
Direct observation of the ocean floor
d.
Undersea vehicles
2.
The word” sluggish “ in line 3 closest in
meaning to
a.
Nervous
b.
Confused
c.
Slow moving
d.
Very weak
3.
Divers have had problems in communicating
underwater because
a.
The pressure affected their speech organs
b.
The vehicles they used have not been perfected
c.
They did not pronounce clearly
d.
The water destroyed their speech organs.
4.
This passage suggests that the successful
exploration of the ocean depends upon
a.
Vehicles as well as divers
b.
Radios that diverse to communicate
c.
Controlling currents and the weather
d.
The limitations of diving equipment
5.
Undersea vehicles
a.
Are too small for a man to fit inside
b.
Are very slow to respond
c.
Have the same limitations that divers have
d.
Make direct observations of the ocean floor
6.
The word “cruse” in line 8 could best be
replaced by
a.
Travel at a constant speed
b.
Travel without problems
c.
Stay in
communication
d.
Remain still
7.
How is a radio- equipped buoy operated?
a.
By operators inside the vehicle in the part
underwater
b.
By operators outside the vehicle on a ship
c.
By operators outside the vehicle on a diving platform
d.
By operators outside the vehicle in a laboratory
on shore.
8.
Which of the following are NOT shown in
satellite photographs?
a.
The temperature
of the ocean’s surface
b.
Cloud formations over the ocean
c.
Presence of oil slicks
d.
The
locations of sea ice
9.
The word
“ those” in the second-last line refers
to
a.
Energy and food
b.
Problems
c.
Observations
d.
Vehicles
10.
According to the author, what are some of the
problems the underwater studies may eventually resolve?
a.
Weather and temperature control
b.
Food and energy shortages
c.
Transportation and communication problems
d.
Overcrowding and housing problems
Answer: