Textbook questions. Science State Board, Class 9: lessons, tests, tasks.

1.	Choose the best answer Difficulty: easy	4
2.	Fill in the blanks Difficulty: easy	4
3.	Match the following Difficulty: easy	5
4.	State whether true or false. If false, correct the statement I Difficulty: easy	6
5.	State whether true or false. If false, correct the statement II Difficulty: easy	6
6.	Answer very briefly I Difficulty: medium	6
7.	Answer very briefly II Difficulty: medium	4
8.	Answer very briefly III Difficulty: medium	4
9.	Answer very briefly IV Difficulty: medium	0
10.	Answer in detail I Difficulty: medium	5
11.	Answer in detail II Difficulty: medium	5
12.	Answer in detail III Difficulty: medium	5
13.	Intext example I Difficulty: medium	4
14.	Intext example II Difficulty: medium	4

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Textbook questions