Thenewly-built cafe, the walls of __________ are painted light green, is really a peaceful place for us, especially after hard work.
| A．that | B．it | C．what | D．which |
26．Even if there is no scientific proof yet ______ secondhand smoke causes cancer, there is no reason why nonsmokers should be forced to take this risk．
| A．which | B．that | C．when | D．Where |
25．With so little time ______ on math, it is all too easy for children to ignore practicing mathematics, which is a kind of language．
| A．spent | B．being spent | C．to spend | D．was spent |
24．One recent prediction is that within the next 50 years, it ______ possible to link the human brain directly with a computer．
| A．is | B．will be | C．would be | D．Was |
23．—I have ______ high temperature and ______ sore throat．
—Well, you may have the flu．
| A．a; a | B．the; the | C．the; a | D．a; the |
22．The site is fairly near the city center, ___ it can only be reached by a series of narrow streets．
| A．and | B．but | C．or | D．So |