肺炎球菌肺炎最重要的胸部体征是 A．桶状胸 B．扁平胸 C．胸部疱疹 D．胸部肺实变

In the United States and in many other countries around the world, there are four main ways for people to be (91) about developments in the news: newspapers, magazines, and radio or television news broadcasts. A person may use one, or all, of these (92) for information. Each source is useful in its (93) way. Newspapers and magazines can give much information about a particular event. They may (94) some history of the event, some of its (95) , some of its effects, or perhaps give an (96) or point of view on a particular development. Radio and television can help a person to be well informed about what is happening each day. It is also (97) to listen to radio or watch TV (98) do something else at the same time. Many people can listen to the news on their car radio while driving (99) . For the student of English as a foreign language, an English language newspaper may be the most helpful news source that will also (100) you practice in reading English.
Most daily English language newspapers are not very hard to find. They are interesting and helpful in many (101) . In some of them, you may be able to find news about your (102) country. You will find news and information about important national and international political (103) . (104) what you are interested in, you can probably find something in the newspaper about it. A(n) (105) in the newspaper may help you solve a problem. Other stories may be about good movies, concerts, or TV shows.
Usually, an English language newspaper has several (106) or parts. Each part of the newspaper (107) stories about different kinds of news. Some sections have a lot of advertisements which may be helpful if you want to save money. By reading the advertisements, you may find something you want (108) sale. Or you may find that two stories are advertising the (109) thing, but at one store the price is lower. Other sections may have (110) advertisements or have only a specific type of advertisement to interest the people.

A．fewer

B．more

C．less

D．same

以下关于税务机关税收保全的论述不正确的是( )。

A．可以书面通知纳税人开户银行暂停支付纳税人的金额相当于应纳税款的存款

B．可以查封纳税人的价值相当于应纳税款的商品、货物或其他财产

C．可以查封、没收纳税人的价值相当于应纳税款的商品、货物或其他财产

D．纳税人在限期内已缴税款，税务机关未立即解除税收保全措施，使纳税人的合法利益遭受损失的，税务机关应当承担赔偿责任

做钠在氯所中燃烧的实验时，钠完全反应后，在集气瓶内放少量水来吸收过量的Cl₂，但不能完全吸收。如何处理残余的Cl₂呢？同学们进行了相关探究。

【提出问题】向上述集气瓶中滴入石蕊溶液，发现溶液显红色。由此想到，选用氢氧化钠等碱性溶液吸收Cl₂，效果会怎么样？

【查阅资料】氯气是黄绿色有毒气体，溶于水，在饱和氯化钠溶液中的溶解度非常小。

【设计与实验】用两套完全相同的装置做对比实验，如下图所示：

（1）为确保实验的准确性，要先检验装置的____________；

（2）实验开始时，先用弹簧夹夹紧乳胶管，再将注射器内等体积的水和NaOH溶液分别注入充满Cl₂的集气瓶；

（3）充分吸收Cl₂后，打开弹簧夹，观察进入两个集气瓶内饱和NaCl溶液的体积。

【结论与解释】（1）甲实验中，Cl₂溶于水且与水反应生成盐酸和次氯酸（HClO），反应的化学方程式为_______________。

（2）乙实验中，Cl₂与NaOH易发生化学反应。

（3）分析实验现象得知，用碱性溶液比用水吸收Cl₂的效果_______（填“好”或“差”）。

【交流与反思】（1）金属钠在氯气中燃烧的实验现象为_____________________。

（2）向Cl₂的水溶液中滴入硝酸银溶液有白色沉淀生成，化学方程式为__________________。

下列单质中，遇到盐酸或强碱溶液都能放出氢气的是

A．Cu

B．Fe

C．Al

D．Si

下列四幅气旋、反气旋图中，属于北半球的是：（）

A.①②

B.①③

C.③④

D.①④