外研版book 6 revison 同步检测
单项选择：
1.one—third of the area ____ covered with green trees .
about seventy percent of the tress _____ been planted .
a .are ;have b .is ;has c .is ;has d .are ;has
2.the number of the teachers in our college _____ greatly increased this term .
a number of teachers in this school ______ from the countryside .
a .is ;is b .is ;are c .are ;are d .are ;is
3.what ____ the population of
one—third of the population ______ workers here .
a .is ;are b. are ;are c .is ;is d .are ;is
4.not only he but also we ____ right .
he as well as we _____ right .
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