单选题:It can be inferred from the passage that _________.

题目内容:
It can be inferred from the passage that _________. A.the task for Cosgrove is quite heavy
B.the students are enthusiastic about history study
C.the students have little interest in history study
D.West Milford once was a factory town

参考答案:
答案解析:

How long does it take Mercury to complete its orbit around t

How long does it take Mercury to complete its orbit around the sun?

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(本小题满分12分)。 (1)求点P的轨迹方程. (2)若抛物线Y2=X-m与点P的轨迹有四个不同的交点,求m的取值范围

(本小题满分12分)。 (1)求点P的轨迹方程. (2)若抛物线Y2=X-m与点P的轨迹有四个不同的交点,求m的取值范围.

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将4张互不相同的彩色照片与3张互不相同的黑白照片排成一排,任何两张黑白照片都不相邻的不同排法的种数是 ( )

将4张互不相同的彩色照片与3张互不相同的黑白照片排成一排,任何两张黑白照片都不相邻的不同排法的种数是 ( ) A.P44P34 B.P44P33 C.P44C3

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过原点的直线与圆x2+y2+4x+3=o相切,若切点在第二象限,则该直线的方程是( )

过原点的直线与圆x2+y2+4x+3=o相切,若切点在第二象限,则该直线的方程是( )

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