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【简答题】
求过直线x+y+4=0与x-y+2=0的交点，且平行于直线x-2y=0的直线方程。
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反馈参考答案：
举一反三
【单选题】John _____Disneyland. He is still there. [ ]
A.
has been to
B.
has gone to
C.
went to
D.
goes to
【单选题】—May I speak to John? ---Sorry, he Japan. But he in two days.
A.
has been to; will come back
B.
has gone to; will come back
C.
has been in; would come back
D.
has gone to; come back
【单选题】资本主义生产过程是
A.
劳动过程和价值形成过程的统一
B.
劳动过程和价值增殖过程的统一
C.
价值形成过程和使用价值生产过程的统一
D.
物质资料再生产和资本主义生产关系再生产的统一
【单选题】Uncle John _____ his hometown for twelve years. [ ]
A.
left
B.
has left
C.
has gone
D.
has been away from
【单选题】--Where is John? --He ____ Beijing. He ____ come back until next week.
A.
has been to；will
B.
has gone to; won’t
C.
has been to; won’t
D.
has gone to; will
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