填空题
How does the betta breathe air
【参考答案】
The betta has to rise to the surface for air.
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单项选择题
A.Average tuition costs increased by 9 percent.B.Average tuition costs increased by 15 percent.C.Average tuition costs increased by 90 percent.D.Average tuition costs increased by 150 percent.
A.Average tuition costs increased by 9 percent.
B.Average tuition costs increased by 15 percent.
C.Average tuition costs increased by 90 percent.
D.Average tuition costs increased by 150 percent.
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单项选择题
A.In the 16th century.B.In the 17th century.C.In the 18th century.D.During the Middle-ages.
A.In the 16th century.
B.In the 17th century.
C.In the 18th century.
D.During the Middle-ages.
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