纬度有北纬、南纬,经度有东经、西经之分,代号表示正确的是( )
A:北纬用“N”,南纬用“S”,东经用“E”,西经用“W”代号表示
B:北纬用“W”,南纬用“N,东经用“S”,西经用“E”代号表示
C:北纬用“E”,南纬用“W”,东经用“N”,西经用“S”代号表示
D:北纬用“S”,南纬用“E”,东经用“W”,西经用“N”代号表示
针对中国19世纪这种“入侵和反入侵”,你有何认识?
体积为1×10﹣3米3的小球浸没在水中,求小球受到的浮力F浮.
短文填空
Hi, Tony!
I want to tell you a ____ my family. You know I have a sister and she is 13. She likes s____ and dancing. She is s ____ and p____. My father works h____. He is a doctor. He enjoys w____ TV, r____ books and talking w____ his friends. My mother a____ works hard. She is a teacher. She t____ Chinese. She likes cooking. My family has a car. We often go for a picnic.