—There is only one iPad left in the shop window. Hurry up and buy home.
--No need to hurry. I can buy on the Internet if none is left in the local market.
| A．it; one | B．one; it | C．one; one | D．it; it |
. As there is less and less coal and oil, scientists are exploring new ways of making use of ______ energy, such as sunlight, wind and water for power and fuel.
| A．primary | B．alternative | C．instant | D．Unique |
. It seems that living green is______easy and affordable. A small step masks a big difference.
| A．exactly | B．fortunately | C．surprisingly | D．hardly |
-- Do you think it's a good idea to make friends with your students?
--______, I do. I think it's a great idea.
| A．Really | B．Obviously |
| C．Actually | D．Generally |
. The system has been designed to give students quick and easy ______ to the digital resources of the library.
| A．access | B．passage | C．way | D．approach |
. Americans eat______vegetables per person today as they did in
| A．more than twice | B．as twice as many | C．twice as many as | D．more than twice as many |