GED GED-Science 問題集

質問 1：
Blood typing is essentially a chemical reaction that provides data so that blood may be safely transfused from one person to another. The basic objective is to avoid "clumping" that could occur in the recipient when the wrong blood type is received. These "clumps" of red blood cells could block arteries or veins affecting the blood flow to critical body organs, like the heart or the brain.
Exhibit:

Based on the chart and the information, which blood type will not form clumps with either Anti-A reagent serum or the Anti-B reagent serum?
A. Types A and B
B. Type AB
C. Type O
D. Type B
E. Type A
正解：C

質問 2：
A series circuit is one in which current flows only in one path. The same amount of current flows through the entire circuit when it is in series, and each bulb receives the same amount of current. If there is a break in the circuit, none of the bulbs will light.

The diagram at the left shows a series circuit. Which is an example of a series circuit?
A. a string of lights that goes out at the same time if one bulb burns out
B. a chandelier
C. fluorescent ceiling lights
D. car headlights with high and low beams
E. ceiling light fixture with 3 lightbulbs
正解：A

質問 3：
Catalysts are chemical substances that increase the rate of a chemical reaction but are not changed by the reaction. Enzymes are special catalysts produced in body cells and are composed of proteins.
Which statement is true?
A. All proteins are catalysts.
B. All enzymes are catalysts.
C. All proteins are enzymes.
D. All catalysts are enzymes.
E. All catalysts are proteins.
正解：B

質問 4：
All kerosene stoves produce carbon monoxide and carbon dioxide gases as by-products of combustion. Both gases are dangerous to human beings.
When using a kerosene stove, which action provides the best protection against these harmful gases?
A. keeping a fire extinguisher near the stove
B. using only the correct grade of kerosene
C. locating the stove far from walls and furniture
D. circulating air around the room with a fan
E. keeping the room well ventilated
正解：E

質問 5：
A tour guide points to a water-filled tank containing live specimens and says, "Ancestors of this organism developed earlier in Earth's history than any other organism here at the
aquarium."

The guide must have been speaking about which organism?
A. fern
B. mammal
C. flowering plant
D. sponge
E. trilobite
正解：D

質問 6：
Hot vapor from a cup of coffee forms droplets of liquid when the vapor passes over a cool spoon.
This condensation action is similar to which of the following?
A. hail forming within a storm cloud
B. a bathroom mirror fogging up
C. raindrops falling from the sky
D. steam rising from boiling water
E. cold spray coming from a showerhead
正解：B

質問 7：
A loud sound, such as from a radio at a high volume, can be "deadened" more by hanging a heavy drape between the radio and the listener than by using a sheet of plywood.

Based on the information, which statement would justify this conclusion?
A. Plywood is harder to hang than drape.
B. The radio is playing louder than it should.
C. The drape absorbs more sound than the plywood does.
D. The plywood absorbs more sound than the drape does.
E. Sound waves would not reach the drape.
正解：C