在下列几种地图中,与等高线无关的是 A.分层设色地形图 B.经纬网地图 C.地形剖面图 D.等高线
Ten years ago the population of our village was ____that of theirs. A.as twice large as B.twice as large as C.twice as much as
人的性染色体存在于( ) A.体细胞 B.生殖细胞 C.受精卵 D.以上所有细胞
It is a great truth because once we truly understand and accept it, then life is no longer difficult. Most do not fully see this truth. 16 . It seems to them that their difficulties repres
如图所示,一位小朋友正在世博园内的风扇下“纳凉”.这种风扇能喷射大小为微米级(1微米= 米)的水雾,这些水雾在
第三节 书面表达 假如你是李华,新年的时候,你的英国笔友Peter和你交流新年的打算。你回信说你们即将搬进新校园,你打算更好地建设“绿色校园”
已知1, a1, a2, 4成等差数列,1, b1, b2, b3, 4成等比数列,则______.
“三江源自然保护区”中的三江,除澜沧江以外,另外两江指的是:( ) A.长江、黄河 B.长江、雅鲁藏布江 C.黄河、珠江 D.