_________we sleep together or apart is one of the biggest cultural differences, and only in western societies ______ the feeling that babies should sleep apart from their parents.
| A．No matter; it is | B．Whether; is it | C．No matter; there is | D．Whether; is there |
Since Tom downloaded a virus into his computer, he cannot open the file now.
| A．constantly | B．accidentally |
| C．deadly | D．Eventually |
If you are from doing something, you are officially prevented from doing it.
| A．seeped | B．dispersed | C．bombarded | D．Banned |
The school offers many _____ activities for the local students.
| A．infectious | B．recreational |
| C．fragile | D．Vocational |
It is ______ that the noise around us is a(n) _______ to our health and well being.
| A．preventable; precaution | B．denial; existence |
| C．undeniable; hazard | D．vital; culprit |
We can broaden our horizons through _________ to new things.
| A．hazard | B．exposure | C．recreation | D．Vapor |