----- Nội dung dịch tự động từ ảnh -----
PRACTICE TEST B
1. Pill each gap with the correct form of the words in brackets.
The cities have differed in size and layout and they have had a variety of
economic,.
2. Many
theories. (biology) blologist
... and social systems. (government)
conduct experiments to gain information, develop and test
and food education improves the quality of life for all people by
helping farmers increase production and conserve resources. (agriculture)
3.
Most tropical environments have greater species
than cooler areas
devor Bity
do. (diverse)
In the past, uncontrolled hunting was a major cause of
extinction. (endanger)
6. Soils require
(drain)
7. Severe
and
.. if water fills the spaces between the soil particles.
now occurs around the world, even in the most remote rain
.*.*... .....
forests. (deforest) dearestatio
B. Weeds can be . . in some cases: they reduce soil erosion on land where
cultivated plants do not grow. (benefit)
P. The movement of people from rural to urban areas is called . .. (urban)
10. The basic problem was economic . of both blacks and whites by
profit-seeking capitalists. (exploitation)
centences, using a modai verb and a verb from the box.