单项选择题
A．are valuable B．are unimportant C．their friends like D．they themselves need
A．all towns in Britain have The Parks B．The Parks is the only park in Oxford C．The Parks is the home of the university sportsmen D．The Parks is where cricket games take place in summer
A．man is often unable to control the power of nature B．earthquakes occur most often during nighttime hours C．the direction of an earthquake can be detected (= discovered) D．university study the cause of earthquakes