1.1. Walmart has been No.1 for 12 years.

A T

B F

C

D

解析：选A。A 细节理解题。根据第二段中的“Walmart is No.1 for 12 years”可知，沃尔玛连续第十二年成为全球最大公司，该表述正确。故选A。

2.2. Amazon is No.3 in the new list.

A T

B F

C

D

解析：选B。B 细节理解题。第二段提到“Amazon is No.2”Amazon是第二，因此该句说法错误。故选B。

3.3. Saudi Aramco is ranked 4th.

A T

B F

C

D

解析：选A。A 细节理解题。根据第二段的“The fourth is Saudi Aramco”可知，沙特阿美排名第4，此表述正确。故选A。

4.4. Two of the top 50 money-making companies are drug ones.

A T

B F

C

D

解析：选B。B 细节理解题。原文第三段为“Three of the top 50 money-making companies are drug ones”，前50大赚钱公司中有3家是制药公司，而非2家，该说法错误。故选B。