— You've dropped "c" in the word "succeed"!
— Sorry, I forgot letter "c" is doubled.
A：a; a
B：a; the
C：an; the
D：the; the
气候对人类活动的影响表现在（ ）
①农业生产方面；②水利建设方面；③城市建设方面；④交通和工程建设方面
已知椭圆x216+y225=1上的一点p到椭圆一个焦点的距离为3，则p到另一焦点距离为（ ）
was were in well on
