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ves las consolas de audio o no escuchas el sonido
de las lecciones.
Realiza todas las
actividades de cada unidad de estudio y
consulta las respuestas.
Puedes consultar el diccionario
Babylon ubicado en la parte superior de la columna derecha.
tu examen final cuando termines las
40 lecciones y el test
parcial de este curso.
ACTIVITY 1: You are to read the following reading passage carefully. When
answering the questions 1-9 below, you are allowed to refer back to the
passage. The questions are based on what is stated or implied in the
Finally check the correct answers.
One surprising aspect of the waves discussed in
the passage is the fact that they...
formed in concentric patterns B.often
strike during clear weather C.arise
under conditions of cold temperature D.are
produced by deep swells E.may
be forecast scientifically
The waves discussed in the passage often strike...
the coasts of the Aleutian Islands B.in
regions outside the area monitored by the Coast and Geodetic Survey C.at
great distances from their place or origin D.at
the same time as the occurrence of earthquakes E.in
areas outside the Pacific region
It is believed that the waves are caused by...
time belts C.atmospheric
The normal maximum width of the waves is
The U.S. Coast and Geodetic Survey set up a
I. Prevent submarine earthquakes
II. Locate submarine earthquakes
III. Determine the severity of submarine earthquakes
and II only D. II
and III only E.I,
II, and III
Nothing was done about the waves until...
outbreak of World War II C.a
solution was found D. millions
of dollars worth of damage was incurred in Hawaii E.large
areas in Chile were devastated
The movement of the waves has been measured at a
miles an hour B.40
miles an hour C.50
miles an hour D.100
miles an hour E.more
than a hundred miles an hour
According to the passage, the waves occur most
frequently in the area of...
Eastern U.S. seaboard B.the
Pacific C.Argentina D.Western
Given present wave-tracking systems, scientists
can forecast all of the following "except"...
severity of underwater earthquakes B.the
wave's rate of travel C.when
a wave will strike D.where
a wave will strike E.the
height of the wave