The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.

A. to be invented               B. having been invented

C. invented                     D. to have been invented

練習冊系列答案
相關(guān)習題

科目：高中英語 來源： 題型：

The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.

A. to be invented                   B. having been invented

C. invented                         D. to have been invented

查看答案和解析>>

科目：高中英語 來源： 題型：

The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.

A. to be invented               B. having been invented

C. invented                     D. to have been invented

查看答案和解析>>

科目：高中英語 來源： 題型：

The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.

A. to be invented               B. having been invented

C. invented                     D. to have been invented

查看答案和解析>>

科目：高中英語 來源： 題型：

The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.

  A. to be invented               B. having been invented

  C. invented                     D. to have been invented

查看答案和解析>>

科目：高中英語 來源： 題型：

The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.

A. to be invented　　　　　　　 B. having been invented

C. invented　　　　　　　　　 D. to have been invented

 

查看答案和解析>>

同步練習冊答案