高等继续教育 / 大学英语（本二）
Directions: Fill in the blanks with the words given below. Change the form if necessary.
[formidable; ravage; lucrative; crucial; vibrant; hemisphere; dynamic; foster; maritime; surpass]
1. The equator, an imaginary circle on hte surface of the earth, divides the earth into the northern _ _ _ _ _ _ and the southern one.
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