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【单选题】
下列哪一个二次函数，其图形与x轴有两个交点（ ）A.
y=-x 2 +2x-5
B.
y=-2x 2 -8x-11
C.
y=3x 2 -6x+1
D.
y=4x 2 +24
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反馈参考答案：
举一反三
【单选题】Betty is never , but she has to look after her sister every day.
A.
ill; sick
B.
sick; ill
C.
ill; ill
【单选题】He told me that I ______be present at the meeting.
A.
should
B.
might
C.
could
D.
would
【单选题】I can ______ her sudden friendliness she wants me to look after her parrot while she is away.
A.
work out
B.
make out
C.
see through
D.
figure out
【简答题】What do we learn about the woman? A. She is a designer. B. She gets a high salary. C. She often works at night time. D. She has to look after her daughter during the day
【简答题】He told me that I＿＿＿be present at the meeting．
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