- Translation (15points)1.To make your college life more enjoyable, you need to make new friends to hang out and study with.2.When you take classes that interest you, you may find people with similar interests.3. Students often have a passion for sports. If you get involved in a sport at college, for good health or for fun, you can meet new friends and findsomeone to play together with.
- Answer the following questions to according to the text. (首字母已经给出，但填写时请写出完整的单词，下同。)(Para. 1)What is the average age of entering marriage now in the U.S.?Today the average age of getting married is 26for w___________ and 28 for m___________.
- (Para. 2)What do the authors refer to by “emerging adulthood”?By emerging adulthood, they refer to a new life p___________which runs typically from age 18 to 25.
- (Para. 9) Why do the authors say the rise of this new life stage is a good thing?Because they think that young people can make use of the f___________of emerging adulthood to have experiences, otherwise they couldn’t have no matter when they were younger or older.
- (Para. 10) What is the disadvantage of this new life stage according to the authors?Some emerging adults feel o___________by the challenges of this life stage.
- (Para. 11) What do the authors suggest parents do?Be p___________with emerging adults.
- 根据被测组分与其他组分分离方法的不同,不属于重量分析法的是( )
- 加入下列哪种下列溶液,能使BaSO4溶解度减小 ( )
- 有利于得到纯净沉淀的方法是( )
- 摩尔法测定Cl-时,若酸度过高或碱度过高则产生( )。
- 佛尔哈德法中,所用的指示剂是 ( )。
- 晶形沉淀的沉淀条件是____。
- 当一种难溶物质从溶液中沉淀析出时,溶液中的某些可溶性杂质会被沉淀带下来而混杂于沉淀中,这种现象称为____ 。产生的原因有:____ 、____ 、____ 。
- 由于沉淀速度的差异,而在已形成的沉淀上形成第二种不溶物质的现象称为 ____ 。
- 沉淀时,____ 和 ____这两个速率的相对大小直接影响沉淀类型。
- 沉淀滴定法中,莫尔法测定Cl-,指示剂为____,滴定剂为____,终点颜色变为____。
- 佛尔哈德法测定Ag+,指示剂为____,滴定剂为____,终点颜色____。
- 有纯的CaO和BaO的混合物2.212g,转化为混合硫酸盐后重5.023g,则原混合物中CaO的质量分数为____;BaO的质量分数为____。(已知:M(CaSO4)=136.14;M(CaO) =56.08;M(BaSO4) =233.39;M(BaO)=153.33)
- 仅含有纯NaCl及纯KCl的试样0.1325g,用0.1032mol·L-1 AgNO3标准溶液滴定,用去AgNO3溶液21.84mL,则试样中NaCl的质量分数为____,KCl的质量分数为____。(已知:M(NaCl)=58.44;M(KCl) =74.56)
- 荧光黄指示剂测定Cl-时的颜色变化是因为带正电荷的AgCl.Ag+胶体颗粒吸附荧光黄的FI-,引起分子结构的改变,出现颜色的改变。
- 银量法测定Br-,既可采用摩尔法也可采用佛尔哈德法。
- 一家连锁鞋店的经理需要知道每家分店平均月销量是否超过一万伍千元，即假设Ho : µ < 15,000。他要市场调研部随机抽10家店检查月销量。 此处正确的假设检验方法应该是（）
- 下列指标中，不是反应数据离中趋势的是（）
- H0本来是真实的，却被错误地否定了，这种错误称为（）。
- 一个好的估计量应该随着样本容量的增大，与被估参数的偏差越来越小，这反映了（）准则。
- Z统计量的适用条件是（）。
- 一个数据分析师有来自同一个样本的两个变量的观察值，这两个变量均服从正态分布，该数据分析师想分析这两个变量的均值是否相等，此处正确的假设检验方法是（）。
- 利用如下信息来回答下面两道选择题：假设总体均值为200，样本平均数为220，样本容量(n)为25，样本标准差为15，样本平均数的标准误是多少？（）
- 利用上述信息，t统计量的值是多少？（）
- 在假设检验中，当样本容量不变时，减少α会引起β增大，减少β会引起α的增大。
- 在假设检验中，兼顾α和β很困难，首先考虑的是控制α。
- 列联表内每个格子的期望频数等于每行或每列的总和。
- There ________ a dolphin show in the zoo tomorrow evening.
- There ________ New Year parties this afternoon.
- There is little milk left in the bottle, ______?
- A: What's in the picture on the wall?B: There__________ a teacher and some students playing soccer on the playground.
- There _________________ six countries in SCO （上合组织） at first, but now the number has increased to eight.
- There _______ a big tree in front of my house. I could hear many birds sing in it.
- There _____ some fruit and vegetables in it.
- There ________a teacher and thirty students in the classroom.
- There ________ some milk and two eggs on the table.
- The weather forecast says that ______ another storm tomorrow.
- A: Listen! There__________ someone __________ at the door.B: It must be your sister.
- Look! There _______ so many people _________here. Do you know what has happened?
- SMA面层的结构特点是“三多一少”,具体指的是粗集料多、矿粉多、沥青多、细集料少。( )
- SMA结构是典型的悬浮密实结构。( )
- SMA路面比较适用于高速公路、一级公路的抗滑表层。( )
- SMA面层厚度一般为3.5~4cm。( )
- SMA面层的细集料要求选用优质的机制砂,不宜使用天然砂。( )
- SMA面层对矿粉的要求中可以使用回收粉尘。( )
- SMA经马歇尔试验确定的沥青用量宜采用 “谢伦堡沥青析漏试验”及“肯塔堡沥青混合料飞散试验方法”进行检验。( )
- SMA路面碾压应遵循“紧跟、慢压、低频、高幅”的原则。( )
- SMA面层的碾压应采用钢轮压路机,不宜使用轮胎压路机。( )
- SMA面层的碾压可以采用振动压路机,但要避免粗集料碾碎和泛油现象发生。( )
- A new report suggests that chewing gum may be a health h______(危险，危害).
- He studied philosophy and p______(心理学) at Yale.
- Doing it properly makes c______(相当大的，相当重要的) demands on our time.
- The i______(强烈，剧烈) of the work left little room for personal grief or anxiety.
- It used to be a private, e______(独有的; 专一的)club, and now it's open to all New Yorkers.
- He tried to return to work, but found he could no longer cope with his d______(费时费力的) job.
- Their spending on research is e______(过度的，过多的) and is slowing developments of new treatments.
- Her lawyer said she understood the c______(结果，后果) of her actions and was prepared to go to jail.
- If we'd all work together, I think we could a______(完成，实现) our goal.
- The exercise obviously will improve strength and e______(持久力，忍耐力).
- 此题不严谨，已删
- 我们要构建的社会主义和谐社会的总要求是( )
- 新民主主义革命时期,党领导的统一战线,先后经过了( )
- 社会主义初级阶段的论断包括两层含义( )
- 两个解放思想、实事求是的“宣言书”是指( )
- 江泽民强调,我们想事情,做工作,想得对不对,做得好不好,根本的衡量尺度,就是人民( )。
1今日累计人数
1在线人数
微信支付 
支付宝支付