小汗腺分布范围广泛，但不分布于下列哪一部位：（）A．掌跖 B．面部 C．躯干 D．唇

下面短文中的划线部分是错误的，请改正，但不得改变原文意思。

Mr. White is our English teacher. He has  come 小题1: in China for more than two year小题2:.  He has been to many interesting places in Beijing,  and 小题3: he has not yet been to many  others 小题4:parts of China. Last week he goes 小题5: to Mount Emei in Sichuan Province with his family. Many people like travelling by  the air小题6:, but the White小题7:   family think that travelling by train is the best, it is much  cheap小题8: and far more enjoyable than a trip by air. They had a wonderfully 小题9:train trip to Chengdu  after 小题10:they went on to Mount Emei by bus.

Now more and more Chinese attach more importance to _____.[ ]

A. use

B. using

C. uses

D. used

下表是不同温度下水的离子积数据

试回答以下问题

（1）若25＜t1＜t2，则a________1×10^-14 (填“＞”、“＜”或“=”），作此判断的理由是________________________。

（2）25℃下，某Na₂SO₄溶液中=5×10^-4 mol·L^-1，取该溶液1mL加水稀释至10mL，则稀释后溶液中c(Na⁺) : c(OH^-)=____________。

（3）t2 ℃下，将pH = 11的苛性钠溶液V₁L与pH = 1的稀硫酸V₂ L混合（设混合后溶液的体积为原两溶液体积之和），所得混合溶液的pH = 2，则V₁∶V₂ =_______________，此溶液中各种离子的浓度由大到小的排列顺序：______________________________

热射病的特点为（）

A.高温环境中突然发病，体温高达40～42℃

B.早期无汗

C.不伴有皮肤干燥、灼热

D.无意识障碍

E.多发于年老体弱者

疆土对于( )相当于( )对于铸造

A．浩瀚 钢铁

B．发掘 一流

C．开辟 品牌

D．保卫 技术