__________ the Internet is of great help, I don't think it's a good idea to spend too much time on it.
| A．If | B．While |
| C．Because | D．As |
we can avoid _________ with rest and a balanced diet.
| A．ill | B．to get ill | C．getting ill | D．be ill |
Expo 2010 Shanghai China __________ on both ba{007}nks of the Huangpu River in the city of Shanghai, China, from May 1 to October 31, 2010.
| A．is being held | B．is holding | C．will hold | D．holds |
. The farmers were more anxious for rain than the people in the city because they had more ______.
| A．at length | B．at last | C．at stake | D．at most |
As is often pointed out, knowledge is a two-edged weapon which can be used ______ for good or evil.
| A．similarly | B．widely | C．equally | D．properly |
Heavy drinking used to be acceptable, but as drunken driving has caused so many tragedies public opinion is no longer ______.
| A．accurate | B．tolerant | C．appropriate | D．reliable |