【简答题】Paris - Two diamonds together worth over 11 million euros ($20.49 million) disappeared from an antique dealers' show in Paris on Monday. Police said a glass case holding the jewels was forced open dur...
【单选题】The alarm system was not ________ when the paintings were stolen.
【单选题】What measure was taken against floods in London in the 1960s?
A.
A flood wall was built.
B.
Rescue teams were formed.
C.
An alarm system was set up.
D.
50 underground stations were made waterproof.