Today is sunny.
It's a sunny day today.
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- 1yesterday I goes shopping with my mother
- 2(1)求经过直线l1:7x-8y-1=0和l2:2x+17y+9=0的交点,且垂直于直线2x-y+7=0的直线方程.(2)直线l经过点P(5,5),且和圆C:x2+y2=25相交,截得弦长为45,求l的方程.
- 3某人乘轮船由A地顺流而下到B地,然后又逆流而上到C地,共乘船4小时.
- 4形容桥的词语有哪些
- 5一个周长是6.28分米的圆形纸,沿直径剪成两个半圆,每个半圆的周长正是3.14米_(判断对错)
- 6英语翻译
- 7已知:扇形的圆心角为60度,其弧长AB为3πcm,求AB弦长
- 8喜悦的近义词词是什么?
- 9the teacher,along with 14 students,were visting a museum when the earthquake happened.
- 10通常人的血液和体重得比是1比13,张强的体重是39千克.他身上的血液约是多少千克?