He knew four languages, _________ English, Russian, German and French．

He knew four languages, _________ English, Russian, German and French．

A.namely

B.such

C.like

D.for example

答案及解析： A

解析：

后面是把前面提到的都列举出来，所以用namely，“也就是说”。如果是举例说明，则用such as或like。