新综合科学作业1PDF电子书下载

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1 STARTING SCIENCE 1

Exercise 1.1 1

Exercise 1.2 4

Exercise 1.3 8

Exercise 1.4 11

2 LOOKING AT LIVING THINGS 16

Exercise 2.1 16

Exercise 2.2 19

Exercise 2.3 23

3 ENERGY 28

Exercise 3.1 28

Exercise 3.2 31

4 EXPLAINING MATTER 37

Exercise 4.1 37

Exercise 4.2 41

Exercise 4.3 45

Exercise 4.4 48

5 SOLVENTS AND SOLUTIONS 52

Exercise 5.1 52

Exercise 5.2 55

Exercise 5.3 60

6 CELLS AND REPRODUCTION 64

Exercise 6.1 64

Exercise 6.2 67

Exercise 6.3 69

Exercise 6.4 73

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