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四. 慧眼识珠,单项选择.（10分）
1. What’s this________English.
A. on B. in C. for
2. -----What are these?
----______ are glasses.
A. they B. this C. that
3. ______ points down on a map.
A. east B. north C. south
4. The U.S is _______ of Canada.
A. east B. north C. south