— Do you know when the technology for hybrid rice            to the United States?
— Yes. In 1980.

A. introduced
B. introduces
C. is introducing
D. was introduced
D
請(qǐng)?jiān)谶@里輸入關(guān)鍵詞:
相關(guān)習(xí)題

科目:初中英語(yǔ) 來(lái)源:河北省期末題 題型:單選題

— Do you know when the technology for hybrid rice            to the United States?
— Yes. In 1980.
[     ]
A. introduced
B. introduces
C. is introducing
D. was introduced

查看答案和解析>>


同步練習(xí)冊(cè)答案