A CYLINDER-SHAPED DEVICE FOR MAKING OBJECTS THAT ARE FAR AWAY LOOK...
11. a cylinder-shaped device for making objects that are far away look closer and larger, using
a combination of lenses, or lenses and curved mirrors: ………
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Key phần nghe
Phần viết:
I. You went on holiday in a city in Asia. Write a postcard to an English pen friend of yours.
Suggested:
II. bài gợi ý trong sgk nha