----- Nội dung dịch tự động từ ảnh -----
VII. Fill in a suitable word
The smoke signals used (..1..) American Indians did not convey the complex messages seen in Hollywood movies.
Smoke signals (..2..) in fact used by the semi-nomadic tribes of the Great Plains. However, their content was limited
(..3..) a few simple messages whose meaning had been agreed upon in (..4..). For example, Piman warriors in Arizona
who had just finished a successful raid might send up a column of (..5..), and the village would reply with two columns of
smoke. Smoke signals (..6..) most commonly used to broadcast news of victory in battle, or to warn of sickness in a camp
or dangers (..7..) as approaching enemies. Fires fed (..8..) damp grass or boughs of evergreen sent up the one or two
simple, unbroken columns of smoke needed to send a message. The place that the signal comes from - (..9..) on a hill
or in a valley - conveyed most of the meaning. When Apaches out hunting spotted another group of Indians in the
distance, they (..10..) a fire conspicuously to the right of their own party that meant "who are you?".