【单选题】孙子说: 地生度,度生量,量生数,数生称,称生胜。故胜兵若以镒称铢,败兵若以铢称鎰。称胜者之战民也,若决积水于千仞之谿者,形也。这里,“镒”和“铢”都是古代重量单位:镒为两的24倍,两为铢的24倍,所以,镒为铢的()倍。
【简答题】根据句意及首字母提示补全单词。 1. She is only 3 years old, but she can r_____ many poems. 2. My aunt is a n_____ in a hospital. She takes good care of her patients. 3. Please make a d_____ with your partner. 4. At ...
【简答题】利用图形来表示数量或数量关系,也可以利用数量或数量关系来描述图形特征或图形之间的关系,这种思想方法称为数形结合.我们刚学过的第9章《整式乘法与因式分解》就很好地体现了这一思想方法,你能利用数形结合的思想解决下列问题吗? (1)如图,一个边长为1的正方形,依次取正方形面积的 、 、 ,根据图示我们可以知道: . 利用上述公式计算: . (2)计算: ; (3)计算: .
【单选题】向量(2,-3,1)和向量(1,-1,3)的数量积(也称“点积”)为( )
【单选题】向量(2,-3,1)和向量(1,-2,0)的数量积(也称“点积”)为( )
【简答题】完形填空。 The life of the 'stay-home' girl Mary is only 12 years old but she doesn't live with her parents. Her parents live far away and she has to 1 after her little brother. Mary is one of the 'stay-ho...
【多选题】各机关单位志愿服务流动站点必备服务项目有哪些?
A.
提供自行车、电动车免费打气服务(打气筒、修理工具箱)
B.
免费提供药箱(创可贴、棉签、碘优等简易应急医用物品)
D.
各单位可根据自身实际增设个性项目,如司法局可增设免费法律咨询,税务局可设免费办税咨询服务等
【单选题】向量(3,-1,-2)和向量(1,2,-1)的数量积(也称“点积”)为( )
【简答题】选择适当的单词并用正确形式填空,使句子意思完整。 he pupil friends Canada teacher 1. My name's Kate. I'm from ________. 2. Sarah is a ________. She is only 8 years old. 3. This is Mike. ________ is a boy. 4. This is M...
【简答题】用所给单词的适当形式填空 1. Mary is only four years old, but she can (speak) English. 2. (arrive not) late for class. 3. Does Tom (have) to (finish) his homework by five? 4. She practices (play) the piano every d...