Choose the appropriate word from the
options provided to complete the sentence.
1. power, powerful, powerfully, powerless,
powered
a.
There are many ways of producing____
b.
A battery ____ calculators occupy less space than their predecessors.
2. electricity, electric, electrical
electrically
a.
A lot of ___ is needed to operate large computer systems. Alexander
Graham Bell invented the ____ light bulb.
b.
Many students today are studying to become ____ engineers.
3. Magnet, magnetism, magnetic, magnetize,
magnetized
a.
Both tapes and disk are considered ____ storage media,
b.
information is recorded on a disk in the form of sport cell
bits,
c.
___ is the principle underlying the storage of information in
computer memories.
SPEAKING PRACTICE
Describing qualities of materials
All materials have various properties.
There are some materials and some
properties you have to describe.
|
Materials
•
glass
•
rubber.
•
copper
•
steal
•
wood
•
porcelain
•
polythene
•
paper
•
hard
•
fragile
•
resistant
|
Properties
•
stiff
•
strong
•
weak
•
tough
•
brittle
•
flexible
•
elastic
•
soft
|
Ask and answer the questions about the
properties of various materials.
Examples
: a.
- Is glass resistant to fire?
- No,
it isn't. It is brittle.
b. - Is wood a soft material?
- No.
it isn't. It is a hard material.
Use the following notes to help you.
•
glass/resistant
•
polythene/brittle
•
rubber/rigid
•
wood/hard
•
paper/strong
•
steel/soft
•
leather/tough
We often want to modify the statement
about the properties of materials.
Examples:
•
Glass is extremely
brittle.
•
Polythene is very
resilient.
•
Wood is fairly strong
•
Rubber is quite
tough.
•
Paper is not very
strong.
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