白酒中有机酸的测定通常采用标准氢氧化钠溶液进行定量分析，该方法属于（）。A、酸碱滴定

阅读理解。

     Li Jun, a 17-year-old girl ① Shenzhen Foreign Language School, still can't believe her 10-day free training

camp in the Alps in Switzerland last month was true!

     But how did she achieve this once-in-a-lifetime opportunity?

     Last October, a piece of short world news in a newspaper "免费看世界②", caught her eye. When she

asked her friends if the story was real, they laughed at her, for they thought she was day-dreaming.③ However,

Li decided to apply online the following weekend.

     On December 14, Li Jun surprised her friends with an invitation letter from the program, the Pangaea Young

Explorer Selection Camp set up by South African explorer Mike Horn.

     Because of her performance during the training, Li was chosen as one of the eight young explorers to join

Mike Horn in the South Island of New Zealand in May.

1. 在①处的空白处填入适当的词，使句意完整。

    ___________________________________________________

2. 将②句泽为英文。 

    ___________________________________________________

3. 将③处画线的句子译为中文。

    ___________________________________________________

4-5 判断正(T)误(F)。

( )4. The free training camp lasts for ten days.

(     )5. AII the friends believed what the newspaper said.

在我们的生活中，许多现象与化学有着密切的联系，请用CO₂、O₂、SO₂、CO、N₂H₂O等物质填空：

（1）用煤炉取暖时易发生中毒，主要是由于室内______而引起的．

（2）煤中含有硫元素，燃烧时会产生污染空气的______；

（3）久未开启的菜窖中因含有大量的______，故进入前必须要做灯火实验；

（4）支持燃烧并供给呼吸的气体______．

（5）开封的饼干在空气中会回潮变软，是由于空气中含有______  而引起的．

中国解放军由陆军，海军和空军三个军种组成。

偏痪患者进行步行训练的基本要求是（）

A.患肢可以独立承担体重

B.站立平衡达到3级以上

C.能够主动配合训练

D.下肢必须要有痛觉

E.必要时可以使用矫形器

当遇有雨雪、大雾、风沙及风速大于9m/s的恶劣天气时，应停止高处作业吊篮施工作业，并按（）处置。

A.将吊篮平台空中暂停，等恶劣天气过去继续施工

B.将吊篮平台停放至地面，对钢丝绳、电缆进行绑扎固定

C.将吊篮平台停放至地面

D.将吊篮平台空中暂停，并对钢丝绳、电缆进行绑扎固定