小组讨论可以采用的讨论形式有( )。A．公开讨论 B．封闭讨论 C．座谈会 D．陪席

患者男，25岁，反复咳嗽、咳痰、发热1个月余，有吸烟史7年。抗炎治疗无效。查体：两肺呼吸音粗，未闻及干、湿啰音。辅助检查：白细胞11.4×10⁶、中性粒细胞0.763%、血沉：31mm/h，其他均（－）。HRCT：两上、中肺可见弥漫性分布的小囊腔及结节影，纵隔淋巴结不大，血管前间隙可见软组织肿块影，胸片提示出现气胸。

该病首选的药物治疗是（）。

A.异烟肼

B.糖皮质激素

C.甲氨蝶呤

D.广谱抗生素

E.氟康唑

下列对各种材料的开发利用过程中，主要过程属于化学变化的是[ ]

A．用棉、麻等植物纤维纺纱织布

B．用钛和钛合金制成飞机、火箭的外壳

C．用砂子、石灰石和纯碱等为原料生产各种玻璃

D．用铝箔制成各种形状的制品

在人体吸入和呼出的气体中，含量最高的分别是（　　）

A．氧气、二氧化碳

B．氮气、二氧化碳

C．氧气、氧气

D．氮气、氮气

When an ant dies, other ants take it out of the nest, often within an hour after its death. This behavior interests scientists and they wonder how ants know for sure—and so soon—that another ant is dead.

One scientist recently came up with a way to explain this ant behaviour. Dong-Hwan Choe is a biologist, a scientist who studies animals and plants. He found that ants have a chemical on the outside of their bodies that signals to other ants, “I'm dead—take me away” when it is dead.

But there's a question to answer: As we know, if an ant is dead, it stops moving. But when an ant is sleeping or knocked unconscious, it is also not moving. However, other ants don't move the living ant out of the nest. How do they know this ant is not dead? Choe found that ants have another chemical on their bodies, which tells nearby ants something like, “Wait—I'm not dead yet” when it is not dead. Choe suspects that when an ant dies, the chemical that says, “Wait I'm not dead yet” quickly goes away. When other ants detect the “dead” chemical without the “not dead yet” chemical, they move away the body.

To test his theory , Choe and his team put different chemicals on ants. When the scientists used the “I'm dead” chemical, other ants quickly moved the treated ant away. When the scientists used the “Wait—I'm not dead yet” chemical, other ants left the treated ant alone. Choe believes this behavior shows that the “not dead yet” chemical overrides the “dead” chemical when picked up by other ants. And that when an ant dies, the “not dead yet” chemical fades away. Other nearby ants then detect the remaining “dead” chemical and remove the body from the nest.

Understanding this behavior can help scientists figure out how to stop ants from invading new places and causing problems.

小题1:What is the function of the first paragraph?

A．Leading the following paragraphs.

B．Showing the main idea of the passage.

C．Introducing the background of the passage.

D．Giving a summary of the passage.小题2:Which of the following has the closest meaning to the underlined word “overrides” in the fourth paragraph?

A．is weaker than

B．is stronger than

C．is better than

D．is worse than小题3: What can we learn from the passage?

A．Living ants can also be taken away when they are not moving.

B．When an ant dies, it can tell others using a certain chemical.

C．A living ant can pretend to be dead using a special chemical.

D．Ants often use chemicals to communicate with each other.小题4:Which of the following descriptions about Dong-Hwan Choe is right?

A．Choe did this study in order to stop ants from invading new places.

B．Choe is a biologist who is only interested in animals, especially in ants.

C．Choe first came up with an idea to explain this ant behavior，and then did some tests to prove his theory.

D．Choe did the research on this ant behavior on his own

根据文意分析不正确的一项是

A．《游褒禅山记》以小见大，借游山说明治学的道理：一是反对半途而废，提倡深入探索，二是反对道听途说，以讹传讹，主张探本索源，深思慎取。

B．作者在材料的选择上，略写前洞，较详细地写了后洞特点及游后洞的所见所感，这是为了配合说理的需要，这种安排颇具匠心。

C．作者揭示“志”、“力”、“物”三者之间的辨证关系，体现了作者朴素的辩证观点。作者在这儿所论述的既是游山之所得，又是治学处事之理。

D．全文借“古人之观于天地、山川、草木、虫鱼、鸟兽，往往有得，以其求思之深而无不在也”来过渡，将记叙部分和议论部分紧密联系起来，前后衔接自然。