八十八年預官考試英文試題 Directions : Choose the most appropriate answer to each question according to the passage given. For
questions 1~5
Animals
are not the only Carnivorous organisms in the world. Certain plants—usually those in nitrate-poor
soils—occasionally consume meat to stay alive.
One of the best-known is the venus-flytrap, found in the bogs of
North Carolina. The inside
of the plant’s kidney-shaped, slightly hairy lobes is coated
with a sugary nectar that attracts smaller animals, such as ants,
spiders, flies, and even slugs and snails.
If a creature alights on two of the hairs at once, a small
electric current is generated, which causes a change in motor cell water
retention. The motor cells,
located at the middle of the two lobes, go limp; the plant
closes, trapping the creature—all within about tow-fifths of a second.
Digestive juices in the plant then take over, absorbing the
nitrogen and other nutrients from the creature.
After the soft parts are digested, the plant opens and drops the
skeleton to the ground.
(B)1. The word “carnivorous” is used to describe animals the
eat ____.
A
grass B
meat C
plants D
soil (D)2. The word “kidney-shaped” is to describe something that is in the shape of a(n)____.
A
octagon B
square C
triangle D
irregular oval
(C)3.
The word “alight “ means_____
A
to burn B
to adjust C
to land D
to make less
Heavy
(B)4.
When something goes “limp,” it becomes _____.
A
stronger B
weaker C
denser D
thicker
(A)5.
“Nutrients” are ______.
A
substances B
gases C
insects D
plants For questions 6~~10
The
procedure of donating blood has been in use since World I Blood
is needed for transfusion, mainly for surgical procedures and for accident
victims. Donors usually give a pint of whole blood, which is then
divided into platelets, white blood cells, and red blood cells.
One
can donate blood (for red blood cells) about once every two months.
Another form of donation called pheresis is just for donating platelets,
which are separated from the blood and used for patients going through
bone marrow transplants or chemotherapy. A pint of blood is collected,
the platelets are removed, and then the processed blood is transfused
back to the donor..
This
process takes place eight times to get the amount of platelets needed.
Pheresis donors can give platelets every two weeks, because the body replaces the platelets more quickly than it replaces red blood cells. In addition, this method yields as many platelets as ten normal whole blood donations.
Donated
blood is routinely tested for a multitude of foreign bodies
, such as HIV (which causes AIDS), hepatitis B, and syphilis. In addition,
blood that will be used by newborns and infants is usually irradiated
to eliminate harmful elements in the blood.
(C).6. “Chemotherapy “ is a treatment which may need a large
supply
of
____.
A
white blood cells B red
blood cells C platelets D whole
Blood
(B).7.
The purpose of “pheresis”
is to collect ____only.
A
whole blood B platelets C red
blood cells D white
blood
cells.
(A).8.
Which of the following titles is the best for this passage?
A
Donating Blood B Donated Blood C Donors
D Platelets.
(B).
9. One can donate platelets as often as ______.
A
once every two months B once
every two weeks C eight
times a year D ten times a
month.
(D)
10. Which of the following ideas is “NOT” found in the passage?
A
Donated blood may contain harmful elements. B
Blood may be needed for surgical procedures. C
Blood donors usually give a pint of whole blood at a time D
A White blood cell is larger than a red than a red blood cell in
size. For questions 11~15
New
developments in food preservation technology include irradiating some
foods with gamma radiation to keep them fresh. The procedure is relatively
simple; Food travels by conveyer belt through an irradiation chamber
containing pellets of gamma-emitting radioisotopes (usually cobalt-60).
As the food passes , the gamma radiation destroys bacteria, molds
,and yeasts that cause spoilage. The radiation is also used to sterilize
vacuum-packed
meat, which then can be stored for years at room temperature.
Irradiation
has been approved in the United States for use with spices And
bacon and in the state of Florida for use with strawberries. Although food
irradiation has been approved in more than 30 nations and for greater
than 40 different foods, it is not widely accepted by the public in the
United States. One concern is that the energetic radiation might break down
and rearrange given the low radiation levels such concerns are not justified
,and they point instead to the benefits of prolonging foods ‘shelf life-thus
increasing world food supplies. (A)
11. “To sterilize” means _______.
A
to make something completely free from germs B
to cause
spoilage
C to put something into a
bag D to heat something
until it is eatable
(B)
12 A “radioisotope” is
_____.
A
a method B an
instrument C a machine D
a substance
(B)
13. Which of the following
foods is “ NOT” mentioned in the
passage?
A
bacon B banana C
meat D strawberries
(C)
14. According to the
passage, which of the following statements
is
“NOT” true?
A
Food irradiation gas been approved by a number of nations for
various foods B Food
irradiation is not widely accepted by Americans. C
The procedure of irradiating foods is very complicated D
Some people are worried about the safety of irradiated foods.
(D)
15. Which of the following ideas is “NOT” mentioned in the
passage?
A
Irradiation is one of the new developments in food
preservation
technology B Prolonging
foods’ shelf life can increase world food supplies C
Radiation might create harmful
materials
in foods D Food value is
usually measured in
vitamins
,minerals ,or calories. For questions 16~20
When
certain metals such as lead or mercury are cooled to temperatures very
near absolute zero, they exhibit a phenomenon known as superconductivity,
where they lose almost all resistance to the flow of electric current.
If a current is set moving in a closed loop of superconducting
wire, the current will containue to flow indefinietly. Superconductors are used to make very powerful electromagnets for particle accelerators. Someday, they may be used to build trains that float above their tracks on magnetic fields, allowing them to travel at a very high speed because of the reduced friction. Superconductors also may be used to build superfast computers. Until recently, the highest temperature at which any known superconductor would operate was around 22K, or 22 degrees above absolute zero. Such superconductors must be cooled by immersing them in liquid helium, which boils at about 4K. Unfortunately, liquid helium is expensive and in fairly short supply. Recently, new ceramic materials have been found that become superconducting at temperature up to around 70K. These can be cooled with liquid nitrogen, which is much cheaper and more abundant. So
far these new materials have not been able to carry as much current as
metal superconductors, and because they are ceramics, they have been
difficult to form into wires. Eventually, superconductors may be cooled
with conventional refrigeration equipment.
But the real dream is to find superconductors that function at
room temperature. (C)16.
Ceramic superconductors are better than metal ones because they
.
A
can be formed into wires easily
B
can carry much more electric current
C
become superconducting at a higher temperature
D
can function at room temperature (A)17.
The “superconductivity” of certain materials is caused by .
A
a very low temperature
B a very
high moving speed
C
a very high magnetic force
D A very low
air pressure (D)18.
The capital letter “K” in this passage(as in “22K”)is
used as the symbol for .
A
the boiling point of water
B the number of a
thousand
C
electrical resistance
D absolute
temperature (A)19.
Which of the following ideas if “NOT” found in the passage? A Absolute zero is the theoretical temperature where all molecular motion stops.
B
Liquid helium boils at about 4K.
C
Liquid nitrogen is more abundant than liquid helium.
D
Mercury can become superconductive. (C)20.
Which of the following statements if “NOT” the according to
the passage?
A
Lead can lose almost all
resistance to the flow of electric current because of low temperature.
B
Superconductors may be used to build trains that float above
their tracks.
C
Ceramic superconductors can carry as much current as metal ones
do.
D
Liquid nitrogen is much cheaper than liquid helium. For question 21~25
Radar
has been used since World War Ⅱ
to locate and track storms all over the world. Radar antennas send out
radio wave pulses toward the clouds.
All types of precipitation and even boundaries created by
air temperature differences reflect some of the waves back to the
antennas. The received radio wave data are plotted on maps, which are
used to create many of the weather maps we see on television and in
newspapers.
The
latest weather radar techniques use the Doppler effect- a phenomenon
discovered by Austrian scientist Christian Doppler in 1842, who noted
that the frequency of sound waves from an approaching source is shifted
to a higher frequency and that those receding source is shifted
to a lower frequency. The
same principle is applied to Doppler radar-radar the
gathers radio wave frequency to “read” weather events.
Doppler
radar can determine precipitation moving toward a weather station, from
the increase in the radio wave frequency reflected from the clouds.
The radar detects any frequency changes in the speed of the
clouds and uses the data to show wind patterns.
For example, if the precipitation is being blown away from the
antenna, the frequency of the radio waves decreases. Doppler radar is
also used to predict tornadoes: The changeable winds around a storm could indicate the
internal circulation in a storm that could lead to a twister. (C)21.
The word “receding” means
.
A
going down B going up
C moving away D coming out (C)22.
Radar is introduced in this passage mainly as a device to detect
.
A
aircraft B
ships C
storms D
missiles (C)23.
In this passage, which of the following is mentioned as a type of
“precipitation”?
A
snow B
hail C cloud
D rain (D)24.
The word “pulse” in this passage refers to .
A
heartbeat B
speed C
air pressure D
wave (C)25.
Which of the following ideas is found in the passage?
A
Weather information can be gathered from space via satellites.
B
Weather balloons are not very reliable.
C
Wind patterns can be detected by Doppler radar. D Doppler radar is very expensive. |