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illness. What makes people sick? These are all questions that interest scientists and that, when answered, will surely, have an effect on our lives.21. A. the B. those C. such D. this22. A. does B. helps C. works D. gives23. A. Scientists B. Students C. Biologists D. Teachers24. A. of B. those C. that D. other25. A. You B. They C. People D. Many26. A. that B. to C. about D. what27. A. what B. that C. he D. then28. A. studying B. working C. looking D. learning29. A. only B. though C. too D. then30. A. work B. make C. allow D. let31. A. is B. must C. had D. may32. A. life B. work C. study D. lives33. A. of B. to C. in D. about34. A. to B. about C. above D. at35. A. this B. that C. some D. these36. A. women B. people C. ladies D. human37. A. much B. over C. better D. even38. A. like B. with C. of D. about39. A. about B. of C. to D. and40.A. the B. along C. with D. to。? What information can explain where human beings e from and why they act the way they do? Questions 38 people and their lives. Some of 35 questions are: What are men and 36 for many people all over the world. Some of the things one might study 33 the world easier to understand. It 31 are trying to understand not only 26 makes people human, but also the things 27 are also continuing to study many 24 ll the most important word in this sentence.20. 王老師病了,我將代替他。ve three zones.19. 你在這一句中漏掉了最重要的一個詞。For convenience, England is After we learnt the text, everyo