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Choose the one that best completes the sentence. Mark your answer on the ANSWER SHEET. (5 points) Advance in science more often than not encounters powerful opposition, Darvin's Theory of Evolution

1. History 1921.12. 16, Fritz Winkle observed the phenomena of fluidization and developed the gasifigator 1939. Warren Lewis and edwin gillil and discovered the technique of catalytic cracking with fast fluidization 1960s Douglass elliott began to use fluidized bed to produce steam

“Any subject can by taught effectively to any child at any stage of development

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人教版《小学英语》家庭作业同步配套教学课件（五年级下册）Unit 5 Whose dog is it？_Part A Let’s learn & Look, say and complete