Download Passages 2 Unit11

Passages 2 Unit11
Science and Technology
Lesson A~ Part 2
Listening
• gene (n): a specific, chemical pattern (on a
chromosome) that is received from the parents and
controls the development of particular of characteristic
in an animal or plate.
• blueprint (n): an early plan or design that explains
something or how something might be achieved.
• organism (n): a single living plant, animal, or other
living thing.
• alter (v): to change something (often
slightly), or to cause a change to happen.
• crop (n): a plant such as a grain, vegetable,
or fruit grown in large amounts by farmers.
• herbicide (n): a chemical that is used to
destroy plants, especially weeds.
• soybean (n): a type of bean grown
especially in Asia and the U.S., used as a
food for people and animals.
• weed (n): any unwanted wild plant that
grows in a garden or field.
• toxin (n): a poisonous substance,
especially one that is produced by bacteria
and causes disease.
• species (n): a set of animals or plants that
have similar characteristics to each other
and can breed with each other.
• ecological balance: the balance of
relationships between living things and their
environment.
• self- perpetuating: having a system that
avoid change and produces new things
that are very similar to the old ones.
• retailer (n): a person or business who
sells goods to the public
Lesson A ~Listening
<answers>
Advantages
Disadvantages
1. Crops could be
made resistant to
plant-killing
chemicals.
1. There could be new
toxins in foods.
2. Crops could be
made resistant to
bacteria, viruses,
and insects.
2. Disease could
spread across different
species of plants.
3. More nutritious
food could be
developed
4. x
3.The ecological
balance could
be disturbed
4. Plants could
grow out of
control.
Lesson A~ Part 3
<answers>
•
•
•
•
•
•
•
•
1. x (uncountable noun in general statement.)
2. x (plural noun in a general statement)
3. The (reference to specific computers)
4. x (plural noun in a general statement)
5. a (first mention of a countable noun)
6. x (uncountable noun in a general statement)
7. The (last = sequence marker)
8. x (uncountable noun in a general statement)
Good Science, Bad Science
• Plastic surgery= operations to change your
appearance
• Prospective=with vision of future
• Microchip implant
• To approve of= to agree with
• What really counts= what really matters=
what is really important
Lesson A ~ Part 5
(A)<answers>
• 1. c
• 2. e
• 3. a
• 4. g
• 5. d
• 6. b
• 7. f
Lesson A ~ Part 5
(B)<answers>
• 1. discovery
• 2. law
• 3. theory
• 4. invention
• 5. phenomenon
• 6. conclusion
• 7. consequence(s)
Lesson A ~ Part 6
<answers>
• Paragraph 1: introduction
• Paragraph 2: similar between television
and computers.
• Paragraph 3: differences between
television and computers.
• Paragraph 4: conclusion
Lesson B Listening: I can’t cope with it
• Comedian:entertainer
• Exasperating: extremely annoying
• give me a break: (informal ) an expression
used to indicate an idea or a thing is silly or
ridiculous
• To hook (something) up: to connect something
.
• To be happening (slang): an expression
meaning to be newly exciting or
fashionable
• Domain: an area of interest or over which
a person has control.
• To go nuts (informal): to go crazy
• To revert to (something): to go back to a
previous condition
Present perfect and present perfect
continuous tenses
• The two tenses can be used
interchangeably to talk about an activity
that continues into the present. They
frequently occur with since, for, lately, and
recently.
e.g. Americans have used microwave ovens
for a long time.
Americans have been using microwave
ovens since the 1970s.
• Never, still, already and yet often go with the present
perfect.
e.g. I’ve never cooked any meat in my microwave oven.
• The present perfect focuses on the completion of an
action; the present perfect continuous focuses on the
duration of an activity.
e.g. Elena has installed a smoke detector in her
apartment.
e.g. The landlord has been installing smoke detectors in
all apartments.
• With stative (nonaction) verbs, the present perfect is
generally used. (e.g. like, be, and know)
e.g. Scientists have known about genetic coding in DNA
since the early 1950s.
Lesson A~ Part 2
<answers>
Items
Remote control
Computer
problems
The buttons are too small, it’s
easy to press the wrong button,
and there are too many different
remote controls-for the TV, the
VCR, the cable television and
the stereo.
It doesn’t speak a
language that you can
understand.
Lesson B ~ Part 3
<answers>
•
•
•
•
•
•
•
•
1. has built
2. have spent
3. have exceeded
4. have known
5. have been examining
6. have discovered
7. have been working on
8. have not (haven’t) learned
Lesson B ~ Part 6
A (answers)
• 1. The article is about seafood that is raised
on aquaculture farms rather than fished
from the sea or ocean.
• 2. A fish farm is a place where fish are
raised in captivity.
• 3. Transgenic is the transfer of genes from
one species to another.
Lesson B ~ Part 6
B (answers)
• 1. seafood supplies have increased and
will increase further as genetic traits of fish
and other sea animals are improved.
• 2. The environment suffers because water
is polluted by fish waste and there is an
inefficient use of fish resources: five
kilograms of wild fish must be used in
aquaculture in order to produce a single
kilogram of farmed fish.
• 3. Answer will very.