简述我国黄土高原地区的黄土与古土壤互层分布所指示的古气候意义。

中国甲骨文中的“”字的本义是（），西方语言中的“艺术”（拉丁文：Ars）的本义是（），都说明在古社会“技”和“艺”是统一的。

下列关于QDII基金申购和赎回的说法，正确的有( )。

A．申购和赎回的场所为基金管理人的直销中心及代销机构的网点

B．“未知价”是申购赎回的原则，即申购、赎回价格以申请当日的基金份额净值为基准进行计算

C．“金额申购，份额赎回”是申购赎回的原则

D．当日的申购与赎回申请可以随时撤销

计算机中之所以需要编译程序，是因为需要( )。

A．将人的自然语言翻译成计算机语言
B．人机对话
C．将高级语言程序翻译成目标程序
D．将汇编语言程序翻译成目标程序

The computer keyboard helped kill shorthand—a system of rapid handwriting, and now it’s threatening to finish off handwriting as a whole. When handwritten essays were introduced on the SAT exams for the class of 2012, just 15% of the most1.5 million students wrote their answers in cursive(草写字母). The rest? Block letters.

And those college hopefuls are just the first edge of a wave of US students who no longer get much handwriting instructions in the primary grades, frequently 10 minutes a day or less. As a result, more and more students struggle to read and write cursive.

At Keene Mill Elementary School in Springfield, all their poems and stories are typed. Children in Fairfax County schools are taught keyboarding beginning in kindergarten. Older students who never mastered handwriting say it doesn’t affect their grades.

There are those who say the culture is at a crossing, turning from the written word to the typed one. If handwriting becomes a lost form of communication, does it matter?

It was at University Virginia that researchers recently discovered a previously unknown poem by Robert, written in his unique script. Handwritten documents are more valuable to researchers, historians say, because their authenticity(真实性) can be confirmed. Students also find them more fascinating.

The loss of handwriting also may be  a cognitive(认知的) opportunity missed. Several academic studies have found that good handwriting skills at a young age can help children express their thoughts better—a lifelong benefit.

It doesn’t take much to teach better handwriting skills. At some schools in Prince George’s County, elementary school students use a program called Handwriting Without Tears for 15 minutes a day. They learn the correct formation of manuscript letters through second grade, and cursive letters in third grade.

There are always going to be some kids who struggle with handwriting because of their particular neurological(神经系统的) writing, learning issues or poor motor skills. Educators often point to this factor in support of keyboarding.

小题1:What is the author concerned about after 2012 Sat exams?

A．Keyboarding.

B．Shorthand.

C．Handwriting.

D．Block letters.小题2:A poem by Robert mentioned in the passage is used to ____________.

A．prove how valuable handwriting is

B．explain what a famous poet he is

C．show how unique his poem is

D．stress how fascinating the documents are小题3:The example of Handwriting Without Tears helps to argue that _____________. 

A．the schools are responsible for the loss of handwriting

B．the loss of handwriting is a cognitive opportunity missed

C．it doesn’t take much to teach better handwriting skills

D．the culture is turning from the written word to the typed one小题4:According to the author, when is a perfect time to learn handwriting?

A．Kindergarten.

B．Primary school.

C．High school.

D．College.小题5:What is the author’s attitude towards this debate? 

A．Devotion.

B．Encouragement.

C．Critical.

D．Objective.

短周期元素A、B、C、D、E的原子序数依次增大，A原子最外层电子数是次外层电子数的2倍，C的氢化物在常温下为液体，C和D的化合物可用于制造高性能通讯材料，E元素的最高化合价和最低化合价的代数和为6。下列叙述错误的是[ ]

A．E元素处于元素周期表中第3周期第ⅦA族

B．元素A、B、C的原子半径：C>B>A

C．元素B、C、D的非金属性：C>B>D

D．一定条件下，A单质可以将D单质从其氧化物中置换出来