【简答题】如图,P是抛物线C:x 2 =2y上一点,F为抛物线的焦点,直线l过点P且与抛物线交于另一点Q,已知P(x 1 ,y 1 ),Q(x 2 ,y 2 ). (1)若l经过点F,求弦长|PQ|的最小值; (2)设直线l:y=kx+b(k≠0,b≠0)与x轴交于点S,与y轴交于点T ①求证: |ST| |SP| + |ST| |SQ| =|b|( 1 y 1 + 1 y 2 ) ②求 |ST| |SP|...
【单选题】そんな計画ではこの仕事が成功する ( )なかった。
【单选题】Passage Five Cirque du Soleil (say it: Serk du So-lay) is being accused of out-dated thinking about the dangers of AIDS. It is a modem acrobatic circus from Canada that tours in the United States and ...
A.
believes he was fired illegally
B.
says he was not H1V positive
C.
understands why he had to be fired
D.
lives in San Francisco
【简答题】what is cirque du solei?
【单选题】Which of the following statements is NOT true about Cirque Du Soleil?
A.
People of Cirque Du Soleil are street performers, clowns, magicians and jugglers.
B.
When people of Cirque Du Soleil perform, they try to show their talents all in one complete package.
C.
Cirque Du Soleil tries to combine the music with lights.
【单选题】下列有关文学常识的表述不正确的一项是()。
B.
赤字原指原初生的婴儿,后多用于比喻怀有一颗纯洁的爱国心的人
C.
我国的四大古典小说名著是指《红楼梦》《三国演义》《儒林外史》《西游记》
D.
诗经是我国的第一部诗歌总集,也是我国现实主义诗歌的源头
【简答题】已知:在直角坐标系中,直线l 1 为y=3x,点P在直线l 1 上,经过点P和点Q(1,2)的直线为l 2 ,设在第一象限内直线l 1 、直线l 2 和x轴围成的三角形的面积为S,求S的最小值.