10.There is an abundant supply of cheap labor in this country.
A) a steady
B) a plentiful
C) an extra
D) a meager

11.In order to improve our standard of living, we have to accelerate production.
A) step up
B) decrease
C) stop
D) control

12.Gas does accumulate in the mines around here.
A) increase
B) spread
C) collect
D) grow

13. Our plan is to allocate one member of staff to handle appointments.
A) assign
B) persuaded
C) ask
D) order

14. Her behavior is extremely childish.
A) simple
B) immature
C) beautiful
D) foolish

15. We also want to use the water to irrigate barren desert land.
A) hairless
B) bare
C) empty
D) bald

Key :ADBAA CDBDB ACABB