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【简答题】
已知中心在坐标原点O的椭圆C经过点A(2，3)，且点F(2，0)为其右焦点， (Ⅰ)求椭圆C的方程； (Ⅱ)是否存在平行于OA的直线l，使得直线l与椭圆C有公共点，且直线OA与l的距离等于4？若存在，求出直线l的方程；若不存在，说明理由．
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举一反三
【多选题】There are many good books that offer sample resumes and describe widely used formats. The one that is still most popular, the reverse chronological emphasizes where you worked and the job 1 you held....
A.
statistics
B.
resume
C.
qualified
D.
recent
E.
decent
F.
prospective
G.
credentials
H.
specific
I.
available
J.
persuasively K. ranks L. passively M. titles N. impress O. specially
【简答题】外卡钳是用来测量 和
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【单选题】Boredom at Work
① You might find yourself staring at the clock, willing it to move faster so the boring workday will finally end. If your job offers little in the way of stimulation, there are steps ...
A.
strong desire for friendly relationships
B.
your slow periods
C.
dissatisfaction with your personal life
D.
the basic requirements
E.
performing repetitive tasks
F.
inside and outside the workplace
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