通水试验应在工程设备，（）后进行。A、管道冲洗完成B、管道安装完成C、管道试压

患者，男性，67岁。因进行性咽下困难3个月入院，伴消瘦约5kg，查体：皮肤黏膜未见黄染、出血点，左锁骨上可扪及一约2cm×3cm大小淋巴结，质地较硬，无压痛，不能推动，Hb95g／L。

对患者最有帮助的诊断项目是（）

A.CT

B.食管X线吞钡检查

C.食管镜十活检

D.食管脱落细胞检查

E.超声内镜

水中硝酸盐氮测定方法很多，我国《生活饮用水标准检验法》采用下列哪几种方法（）

A.离子色谱法

B.电极法

C.镉柱还原法

D.紫外分光光度法

E.二磺酸酚分光光度法

塔体只考虑工艺条件对它提出的要求。

Many Americans are turning to Japan, they think, a country of high academic achievement and economic success, for possible answers. However, the answers provided by Japanese preschools are not the ones Americans expected to find. In most Japanese preschools, surprisingly little emphasis is put on academic instruction. In one survey, 300 Japanese and 210 American preschool teachers, child development specialists, and parents were asked about various aspects of early childhood education. Only 2 percent of the Japanese respondents (答问卷者) listed “to give children a good start academically” as one of their top three reasons for a society to have preschools. In contrast, over half the American respondents chose this as one of their top three choices. To prepare children for successful careers in first grade and beyond, Japanese preschools do not teach reading, writing, and mathematics, but rather skills such as determination, concentration, and the ability to work as a member of a group. The huge majority of young Japanese children are taught to read at home by their parents.

Like in America, there is diversity (多样性) in Japanese early childhood education. Some Japanese kindergartens have specific aims, such as early musical training or potential development. In large cities, some kindergartens are attached to universities that have elementary and secondary schools. Some Japanese parents believe that if their young children attend a university-based program, it will increase the children’s chances of eventually being admitted to top-rated（一流的） schools and universities. Several more progressive programs have introduced free play as a way out for the heavy intellectualizing (智能化) in some Japanese kindergartens.

小题1:We learn from the first paragraph that many Americans believe     .

A．Japanese parents are more involved in preschool education than American parents

B．Japan’s economic success is a result of its scientific achievements

C．Japanese preschool education emphasizes academic instruction

D．Japan’s higher education is superior to theirs小题2:In Japan’s preschool education, the focus is on     .

A．preparing children academically

B．developing children’s artistic interests

C．developing children’s potential

D．shaping children’s character小题3:Why do some Japanese parents send their children to university-based kindergartens?

A．They can do better in their future studies.

B．They can make more group experience grow there.

C．They can be self-centered when they grow up.

D．They can have better chances of getting a first-rate education.小题4:Free play has been introduced in some Japanese kindergartens in order to      .

A．broaden children’s knowledge

B．train children’s creativity

C．lighten children’s study load

D．enrich children’s experience

正常成人血清钾的参考值为

A．3．5～5．0mmol／L

B．3．0～5．0mmol／L

C．4．0～5．0mmot／L

D．4．1～5．6mmol／L

E．3．0～6．0mmol／L