However, at times this balance in nature is disturbed, _______ a number of possibly unforeseen effects.
A．resulting from B．resulting in
C．having resulted from D．having resulted in
He just _______ the headlines because he was too busy to read the whole newspaper.
A．stared at B．looked around C．glared at D．glanced through
The new technology has opened up a very wide _______ of possibilities.
A．extent B．number C．collection D．range
_______ the new medicine for a year and we’ll see how well it works.
A．Try out B．Make out C．Give out D．Pick out
He studied hard, __________ the exam.
A．aim at B．aiming at passing
C．aiming passing D．aiming to passing
What makes us worried is that the number of people ______to drug is ________.
A．addicted ; increased B．addicting; increased
C．addicted ; increasing D．addicting; increasing
