下列关于报价的计价单位和最小变动价位的说法中，正确的有( )。A．A股价格最小变动

下图为哺乳动物的胚胎干细胞及其分化的示意图。请回答：

(1)胚胎干细胞是从动物胚胎发育至_________期的内细胞团或胎儿的___________中分离得到的一类细胞。

(2)图中分化程度最低的干细胞是__________。在体外培养条件下，培养液中加入___________因子，可诱导该种干细胞向不同类型的组织细胞分化。

(3)在机体内，皮肤干细胞分化成皮肤细胞是机体细胞中基因__________的结果。

(4)某患者不能产生正常的白细胞，通过骨髓移植可以达到治疗的目的。骨髓移植的实质是将上图中的___________细胞移植到患者体内。

(5)若要克隆某种哺乳动物，从理论上分析，上述红细胞、白细胞、皮肤细胞、神经细胞中不能选用作为供体的细胞是成熟的__________。其原因是__________。

(6)若某药物可抑制肝肿瘤细胞DNA的复制，使用该药物可使肝肿瘤细胞停留于细胞周期的____________期。

(7)在制备单克隆抗体过程中的细胞融合阶段，用__________细胞与骨髓瘤细胞融合，经多次筛选最终得到能分泌____________的杂交瘤细胞。

AD是△ABC中BC边上的中线，若AB=4，AC=6，则AD的取值范围是[ ]

A. AD＞1　　　　　　　

B. AD＜5　　　　　　

C. 1＜AD＜5　　　　

D. 2＜AD＜10

吗啡不能用于治疗

A．心源性哮喘
B．支气管哮喘
C．慢性支气管炎
D．原发性支气管癌
E．肺脓肿

证券交易与证券发行有着密切的联系，两者相互促进、相互制约。( )

When a Shanghai ad consultant was recently asked to recommend young local designers to an international agency, he sent three candidates with years of work experience. But the company decided they weren’t good enough and had to import designers from the West. It’s a common problem that Chinese vocational grads simply haven’t had good enough teaching. Most of the lecturers don’t have any real work experience, so they can’t teach useful things. When graduates do get hired, they basically have to be re-educated.

China’s rapid economic expansion has exposed many frailties in its education system, especially on the vocational side. The country can’t produce enough skilled workers. In part that’s because it invests far more in academic than vocational programs. Funding has fallen significantly since the 1990s. Partly as a result, today only 38 percent or so of China’s high-school-age students attend vocational schools, well below the official target of 50 percent. To address this deficit, last year Beijing pledged to spend almost $2 billion on 100 new vocational colleges and 1,000 high schools. And this year it started offering annual subsidies to vocational students.

But China’s training is too abstract, what’s urgently required are technicians who can come up with a good idea and turn it into a marketable product. Parts of the country are already adapting; in Shenzhen, local institutes offer" made to order" training for particular businesses. And some vocational colleges have introduced practical research projects.

But vocational education faces a deeper problem: its image. China’s middle class is eager to forget its experience with physical labor, and few allow their children to become technical workers. Everyone thinks these are things that low-class people do. Thus China now produces record numbers of college grads--who struggle to find work because they lack the skills for manufacturing, where demand is greatest. One fix would be to re-brand vocational subjects as" professional," not" manual," skills.

At the other end of the spectrum are China’s 100 million-plus rural migrant workers, many of whom have little schooling. They have never learned how to work with others, to live in the city, save money or choose the right job. Thus they find it hard to learn from their jobs or plan their careers. This results in extremely high labor turnover. Teaching and training" life skills" to complement vocational programs would help.

Yet the urgency of China’s skilled-labor shortfall will force a rethink. For now, China is relying on cheap, low-skilled, labor-intensive production, but it’s not sustainable in the long term, We must raise our skills level, and it’s impossible for state-run colleges to do all the training. Indeed, with the demand for skilled workers growing all the time, China will need all the help it can get.

What is the author’s attitude towards vocational education in China（）

A. Paradoxical

B.Inconsistent

C. Apprehensive

D. Critical