阅读理解。

1. ______ has the largest population among these countries. [ ]

A. Italy

B. Australia

C. China

2. If you want to visit Big Ben (大本钟), you should travel to ______.[ ]

A. Rome

B. London

C. Beijing

3. You can visit ______ in the country with the smallest population. [ ]

A. the Opera House

B. the Great Wall

C. the Leaning Tower of Pisa (比萨斜塔)

4. From the form, you can find ______ in Western Europe. [ ]

A. one country

B. two countries

C. three countries

5. Which of the following is TRUE according to the information in the form? [ ]

A. Australia and Britain aren't English-speaking countries.

B. Rome is a city in Southern Europe.

C. Canberra is the capital of Italy.

客户融资买入时交付的保证金为A，融资买入证券数量为B，买入价格为 C，证券价格为D，当日收盘价为E，开盘价位F。则融资保证金比例为( )。

A．A/(B·E)
B．A/(B·C)
C．A/(B·F)
D．A/(B·D)