助产

下列哪项不正确的有关单核细胞的叙述（）

A.血中的单核细胞移向结缔组织内继续分化成为巨噬细胞

B.成熟的巨噬细胞可继续分化，生存期达数月至数年之久

C.巨噬细胞分泌的体液因子可对单核细胞调节

D.巨噬细胞在体内发挥吞噬作用后，可在体内崩解

E.巨噬细胞可转为类上皮细胞、异物巨细胞

（12分）碱式碳酸镁[一般以xMgCO₃•yMg(OH)₂•zH₂O表示]密度小，几乎不溶于水，但在水中引起轻微的碱性反应。不溶于乙醇，常温下不会分解，是橡胶制品的优良填料。工艺流程如下图：

（1）回答下列问题：

①生石灰是以石灰石与焦炭混合煅烧生成，焦炭的作用是：                  。

②氢氧化镁浆液与CO₂反应的化学方程式为：

                                    。

③碱式碳酸镁用乙醇洗涤的目的是：                             。

（2）已知：碱式碳酸镁分解反应方程式为：

xMgCO₃•yMg(OH)₂•zH₂O （x+y）MgO+xCO₂↑+（y+z）H₂O

某同学将46.6g碱式碳酸镁样品置于硬质玻璃管中充分灼烧至恒重，残留固体质量为20.0g，将产生的气体先通过足量的浓硫酸，再通过足量的碱石灰，碱石灰质量增重17.6g。根据实验测定的数据，确定碱式碳酸镁[xMgCO₃·yMg(OH)₂•zH₂O]的化学式（要求写出计算过程）。

We hear with our ears, right? Yes, but scientists have known for years that we also hear with our eyes. In a study published in 1976, researchers found that people combined both auditory cues(听力提示) and visual ones，like mouth and face movements, when they heard speech.

A new study that looks at a different set of sensory cues adds to a growing body of evidence that suggests such combination is natural. In a paper, Bryan Gick and Donald Derrick report that people can hear with their skin.

The researchers had volunteers listen to spoken syllables. Meanwhile, they connected the volunteers to a device that would blow a tiny puff (气流) of air onto the skin of their hands or necks. The syllables included “ba” and “pa”, which produce brief puffs from the mouth when spoken, and “da” and “ta,” which do not produce puffs. They found that when listeners heard “da” or “ta” while a puff of air was blown onto their skin, they considered the sounds as “ba” or “pa”.

Dr. Gick said the findings were similar to those from the 1976 study, in which visual cues defeated auditory ones — volunteers listened to one syllable but thought it another because they were watching a video of mouth movements corresponding to the second syllable. In his study，he said，cues from sensory receivers on the skin defeated the ears as well. “Our skin is doing the hearing for us,” he said.

Dr. Gick noted that it would normally be rare that someone actually sensed a puff of air produced by another, although people might occasionally sense their own puffs. “What’s so persuasive about this particular effect,” he added. “is that people are picking up on this information that they don’t know they are using.” That supports the idea that combining different sensory cues is natural.

Dr. Gick said the finding also suggested that other sensory cues might be at work in speech perception(知觉) — that, as he put it, “we are these fantastic perception machines that take in all the information available to us and combine it faultlessly.”

小题1:“Da” or “ta” were considered as “ba” or “pa” when __________.

A．they were spoken quickly

B．puffs of air were blown onto the listener’s skin

C．they were pronounced using a special device

D．they were made with face movements小题2:Which of the following statements is TRUE?

A．Humans combine different sensory cues through experience.

B．Dr. Gick’s new study is more important than the one in 1976.

C．People sometimes can sense their own puffs when speaking

D．Only auditory and visual cues are at work in speech perception.小题3:What is the best title of the text?

A．We Can Hear with Our Skin

B．Our Visual Cues Is Doing the Hearing for Us

C．Facial Expressions Are Important

D．We Are Fantastic Machines

急性血源性骨髓炎除制动外，局部治疗的一个重要措施是

A．穿刺抽脓
B．穿刺抽脓注入抗生素
C．开窗引流术
D．外敷药物
E．理疗

“涮腿踹腹”属于擒敌技术摔擒中的哪一类（）。

A.主动擒拿

B.夺凶器擒拿

C.接腿擒拿

D.挟抱擒拿