11. In order to improve our standard of living, we have to accelerate production.) p9 S& }( S& C+ z* a% w! w
A)step up B)decrease C)stop D)control( ?8 z% R7 g" `3 A
12. Gas does accumulate in the mines around here.; e" k2 K* V' u& ]$ b$ L0 G
A)increase B)spread C)collect D)grow! L1 M# d x9 D
13. Our plan is to allocate one member of staff to handle appointments./ P' b" o5 W% G
A)assign B)persuade C)ask D)order 0 G$ K& H- J6 q0 X3 W: N14. Her behavior is extremely childish.- K' w$ H3 U, `' T4 K# q) a$ x
A)simple B)immature C)beautiful D)foolish: x; E2 \2 @; W" s5 z
15. We also want to use the water to irrigate barren desert land.; g! D5 v H, S. [1 G4 [+ e+ ~
A)hairless B)bare C)empty D)bald