【】George Brown 生物、化学、物理入学样题

lamjin

Biology Sample Questions

1. The sudden withdrawal of one's finger from a hot stove is an example of:

           1. learning
           2. common sense
           3. an instinct
           4. a habit
           5. a reflex

2. If a human being had no anvil and stirrup, he would probably be unable to:

           1. see
           2. taste
           3. smell
           4. hear
           5. think

3. Which of the following organs of the human body is made up of four relatively large chambers?

           1. the kidney
           2. the heart
           3. the spleen
           4. gall bladder
           5. the pancreas

4. When blood is pumped by the heart through the body, it passes through the lungs, where it:

           1. is warmed
           2. temporarily becomes solid
           3. receives a fresh supply of oxygen
           4. received a fresh supply of dissolved food
           5. is freed of disease germs

5. Which of the following best describes the way in which the skin functions?

           1. its function is protective only
           2. it gives shape to the body
           3. it prevents the loss of water by evaporation
           4. it covers the sensitive nerve endings and prevents bleeding
           5. its functions are sensory, preventive and heat-regulating

    Biology Answers: 1e. a reflex / 2d. hear / 3b. the heart / 4c. receives a fresh supply of oxygen / 5e. its functions are sensory, preventive, and heat-regulating


Chemistry Sample Questions

1. Which of the following is an example of oxidation?

           1. boiling water
           2. dissolving salt in water
           3. melting ice
           4. melting wax
           5. rusting an iron nail

2. Soft water is used in preference to hard water for industrial purposes because soft water:

           1. has a better taste
           2. contains fewer bacteria
           3. leaves fewer mineral deposits
           4. boils at a lower temperature

Questions 3, and 4 refer to the following information:


A student is given a litre can filled with a gas which he knows is pure hydrogen, pure oxygen and pure carbon dioxide. He wishes to determine which one of these three gases is in the can.


3. He arranges to observe the colour of the gas. Is this a useful test for him to make?

       1. yes, since the colour of gas is an important property of it
       2. yes, since one of these gases is coloured but the others are not
       3. no, since the colours of gases are not very bright and so are not useful in identifying them
       4. no, since all these gases are colourless
       5. no, since al these gases are coloured but all are the same colour.

4. He arranges to smell the gas. Is this a useful test for him to make?

       1. yes, since the odour of a gas is an important property of it
       2. yes, since one of these gases has an odour but the others do not
       3. no, since all these gases are odourless
       4. no, since gas odours are not strong and so are not useful in identifying them
       5. no, since all these gases have odours which are so much alike that they cannot be distinguished from one another

5. Which of the following CANNOT be represented by a single chemical formula or symbol?

       1. a mineral
       2. a rock
       3. a compound
       4. an element

    Chemistry Answers: 1e. rusting an iron nail / 2c. leaves fewer mineral deposits / 3d. no, since all these gases are colourless / 4c. no, since all these gases are odourless / 5c. a compound


Physics Sample Questions

1. Sources of energy include which of the following:

            I. Cooking gas
            II. A charged automobile battery
            III. Water behind a dam

       1. I only
       2. II only
       3. III only
       4. I and III only
       5. I, II and III

2. A certain machine is said to be 50 per cent efficient. What does this mean?

       1. the machine is not useful for the task performed
       2. the machine operated with no loss of energy 50 per cent of the time
       3. only 50 per cent of the work put into the machine is returning as useful work done
       4. fifty per cent of the energy put into the machine is destroyed
       5. only 50 per cent of the work put into the machine can be measured as energy

3. Copper is a better conductor of electricity than iron because copper:

       1. contains a greater proportion of mobile electrons
       2. is a poorer conductor of heat
       3. cannot be magnetized as easily
       4. has a higher specific gravity
       5. contains fewer free protons

4. The function of the valves in trumpets and tubas is to:

       1. control the loudness but not the pitch of the sound produced
       2. prevent the length of air columns from changing
       3. prevent air columns from vibrating
       4. make air columns vibrate
       5. change the length of air columns which vibrate

5. Most substances expand upon being heated. This statement could be taken to mean that:

       1. the density of most substances decrease as their temperatures rise
       2. attraction between atoms gets stronger as the temperature rises
       3. most combustible substances start to burn at the same temperature
       4. spontaneous combustion is the result of slow oxidation
       5. burning is accompanied by light and heat

    Physics Answers: 1e.I, II and III / 2c.only 50 per cent of the work put into the machine is returning as useful work done / 3a.contains a greater proportion of mobile electrons / 4e.change the length of air columns which vibrate / 5a.the density of most substances decrease as their temperatures rise

一杯清茶

倒是不难，就是专业词汇多了点