A:对边相等
B:对角相等
C:对角线互相平分
D:对角线互相垂直
一般来说板块内部地壳比较____ ;板块与板块____ 的地带,地壳比较活跃.
男生人数占六年级学生总数的____.
女生人数占六年级学生总数的____.
68-40=____
39+6=____
53-8=____
9+90=____
20+57=____
65-60=____
9+34=____
83-8=____
My Travel Plan
⒈On Saturday I will get ready for the trip.
⒉On Monday I will go to Beijing.
⒊On Tuesday I will go to the Palace Museum.
⒋On Wednesday I will go to Beihai Park.
⒌On Thursday I will go to Wangfujing Street.
⒍On Friday I will go home.
____ ____
怎样才能较容易地骑自行车上陡坡?