There is a temperate zone in the mind, between luxurious indolence and exacting work; and it is to this region, just between laziness and labor, that summer reading belongs.
Henry Ward Beecher
Khoa Học Lớp 4
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Khoa Học Lớp 4
Bùi Phương Nga
Khoa Học Lớp 4 - Bùi Phương Nga
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