题目内容：

    A website called Vouchercloud has compiled a list of the world's smartest countries and regions, which is based on three factors - the number of Nobel Prize winners, the average IQ of the population and the school test of pupils.They think the three factors represent the intelligence(智力) of a nation's past, present and future generations.Vouchercloud has done the legwork for you and diligently researched and ranked the top 25 countries in the world by intelligence.

Here is the list of top 10.

1.Which country has the highest IQ?

A.China B.South Korea C.Russia D.The UK

2.How many countries in Asia are in the top 10 list?

A.two B.three C.four D.five

3.Among the three factors,Asia needs to improve__________most.

A.The number of Nobel Prize winners B.The average IQ of the population

C.The school test of pupils D.The number of the students