【简答题】D A study comparing prices in 150 major cities has found that cities in Western Europe have become more expensive to live in since the full introduction of the euro currency (货币 ) . The report also no...
【多选题】Please identify the casue and effectof the problem in the following situation.In recent decades, many people have poured into the cities and the cities have grown so large that now about 50% of the Ea...
A.
None of them
B.
The effect is "Now about 50% of the Earth's population lives in urban areas."
C.
The cause is "Many people have poured into the cities."