1.　　　 This hat will give p________ against the sun.　

20.　 We will spend the vacation at the s______.

Unit 19

19.　 There are big ________(海港) on the east ______(海岸) of China.

18.　 There are many active ________(火山) in this area.

17.　 He has a _____(温和) nature.

16.　 It id a piece of s________ news.

15.　 The group is m ______ made up of young people.

14.　 The children are c_______ in the forest.

13.　 　What’s the main idea of this p_______?

12.　 Glass has a smooth ______(表面).