单选题：Which of the following is true according to this passage?

题目内容：
Which of the following is true according to this passage? A．Only the students in high school were poor in history study.
B．Only college students could not study history well.
C．Students at every level have poor knowledge of history.
D．All American' s knowledge of history was poor.

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答案解析：

Which planet is the closest planet to the sun, Mercury, Mars

Which planet is the closest planet to the sun, Mercury, Mars, Venus or Jupiter?

分类：公共英语五级  题型：单选题
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What kind of new technology helped us a lot to study the pla

What kind of new technology helped us a lot to study the planets?

分类：公共英语五级  题型：单选题
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(本小题满分13分) 抛物线的顶点在原点，焦点为椭圆X2+5y2=5的左焦点，过点M(-1，-1)引抛物线的弦，使M为弦

(本小题满分13分) 抛物线的顶点在原点，焦点为椭圆X2+5y2=5的左焦点，过点M(-1，-1)引抛物线的弦，使M为弦的中点，求弦所在直线的方程，并求出弦长

分类：公共英语五级  题型：单选题
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