Unit 9 nc

Welcome to our class !
Group 2
Unit 9
Warm-up


What can you see in the desert?

cactus
camel
palm
oasis
sand dune
sand storm
desert [`dezət] (n): sa mạc
expansion [iks`pæn∫n] (n): sự mở rộng, sự bành trướng, sự phát triển, sự phồng ra; phần mở rộng
expand [iks`pænd] (v): mở rộng
herd [hə:d] (n): bầy, đàn (vật nuôi)
dune [dju:n] (n): cồn cát, đụn cát
bury [`beri] (v): che phủ, che lấp
brushwood [`brʌ∫wud] (n): bụi cây
ban [bæn] (v): cấm
fixation [fik`sei∫n] (n): sự cố định
fix [fiks] (v): cố định
tricky [`triki] (adj): khó khăn
struggle [`strʌgl] (n): sự đấu tranh
topsoil [`tɔpsɔil] (n): (nông nghiệp) tầng đất mặt
constant [`kɔnstənt] (adj): liên miên, không ngừng nghỉ
edge [edʒ] (n): rìa
cactus [`kæktəs] (n): cây xương rồng

harsh [hɑ:∫] (adj): khắc nghiệt
date palm [deitpa:m] (n): cây chà là
evaporate [i`væpəreit] (v) làm bay hơi
oasis [ou`eisis] (n): ốc đảo
tenuous [`tenjuəs] (adj): mong manh
tricky [`triki] (adj): khó khăn
wash away (v): cuốn trôi đi
sandstorm [`sændstɔ:m] (n):
bão cát

Vocabulary
Reading Text:
Fighting back desert expansion
Answer the following questions:
What may be the causes of desert expansion?
What is “dune fixation”?
In what way can Beijing be affected by the Gobi Desert?
Which method of stopping desert expansion is harmful to the environment?
Suggestive answer:
People cut down trees for fuel and farmland; their herds (horses, cattle) eat up the grass covering the soil.
“Dune fixation” is the method of fixing sand dunes or stopping them from moving forward.
Beijing is affected by the Gobi Desert when strong winds blow sand and dust from the desert into city 30 to 40 days a year.
The method of pouring oil on sandy areas to retain water for planting trees is harmful to the environment.
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b) The following pictures show different ways of fighting back desert expansion. Find the words and expressions in the text to help you describe them.
A. Dune fixation
B. People plant trees.
C. The local government bans burning firewood for fuel.
D. Other countries build long pipelines to carry water to desert areas.
E. Other countries build long canals to carry water to desert areas.
F. People make stone lines along the route of rainwater to catch up rainwater and prevent topsoil from washing away
c) Complete the following summary of the reading text, using no more than three words for each blank.
In many parts of the world, people are suffering desert (1)_____.They have made a lot of (2)_____ to solve the problem. The first way is (3)_____ sand dunes to prevent sand from moving by planting trees or (4)_____ fences. Another measure is (5)_____ for fuel. The third way is (6)_____ on the sand so that water can be retained. Some other (7)_____ methods include building (8)_____ to water dry areas and making stone lines to catch up rain water
Answer
(1) expansion
(2) efforts
(3) to fix/ fixing
(4) building
(5) to ban/ banning burning firewood
(6) to pour/ pouring oil
(7) temporary
(8) canals or pipelines
d) Discuss in groups and answer the question below.
Do you think some part in Viet Nam may become a desert in the future. Why or why not?
Thank you very much for your attention! Good luck to you…