皮皮学，免费搜题
登录
搜题
【单选题】
Robert Burns was a ______ poet.A.
English
B.
Scottish
C.
Welsh
D.
Irish
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】It can be learned from the text that soon after the Second World War
A.
hardly anyone suspected that it was unwise to contaminate the water and air.
B.
people unanimously found it acceptable to damp industrial wastes into the sea.
C.
the government tried to deal with the pollution problem but in vain.
D.
nobody attached great significance to the remedy for public hazards.
【简答题】完成课本181页习题中的第4题。
【单选题】Experiments of this kind ___in both the U．S and Europe well before the Second World War
A.
had conducted
B.
have conducted
C.
have been conducted
D.
had been conducted