下列哪些是SARS病人的临床表现（） A.休克 B.腹泻 C.发热 D.卡他症状 E

A

"In only six clays I lost seven pounds of weight. "
"Two full inches in the first three days!"
These are the kinds of statements used in magazine, newspaper, radio and television ads. , promising new shapes and new looks to those who buy the medicine or the device. The promoters of products say they can shape the legs, slim the face, smooth wrinkles, or in some other ways to add to beauty or desirability.
Often such products are nothing more than money-making things for their promoters. The results they produce are questionable, and some are dangerous to health.
To understand how these products can be legally promoted to the public, it is necessary to understand something of the laws covering their regulation. If the product is a drug, FDA (Food and Drug Administration)can require proof (证明) under the Food, Drug, and Cosmetic Act that is safe and effective before it is put on the market. But if the product is a device, FDA has no authority to require pre-marketing proof of safety or effectiveness. If a product already on the marker is a danger to health, FDA can request the producer or distributor to remove it from the market voluntarily, or it can take legal action, including seizure (查封) of the product.
One notable case a few years ago involved an electrical device called the Relaxacisor, which had been sold for reducing the waistline. The Relaxacisor produced electrical shocks to the body through contact pads. FDA took legal action against the distributor to stop the sale of the device on the grounds that it was dangerous to health and life.
Obviously, most of the devices on the market have never been the subject of court proceedings (法律诉讼), and new devices appear continually. Before buying, it is up to the consumer to judge the safety or effectiveness of such items.

It can be inferred that ads. mentioned in the text are ______.

A．objective

B．costly

C．unreliable

D．illegal

使用显微镜对光的程序是（　　）

①选遮光器上适宜的光圈对准通光孔   ②转动转换器，使低倍物镜对准通光孔

③左眼注视目镜（右眼睁开）    ④转动反光镜调节出一个白亮的视野．

A．①-②-③-④

B．②-①-③-④

C．③-④-②-①

D．③-②-①-④

图甲是美国东北部地区简图，图乙是中国东北地区简图，请你比较这两个地区自然环境、社会经济条件等方面的特征，回答下列问题。(12分)

(1)自然环境特征相似性方面的比较：(4分)

①地理位置__________________；②地形________________；

③气候________________；④矿产_______________________________________。

(2)社会经济发展差异性方面的比较：(8分)

社会经济发展的差异性	美国东北部地区	中国东北地区
当前所处的区域发展阶段
农业结构
交通
城市化水平

当热带气旋中心附近最大风力达到10～11级时，发布的警报为（）。

A．热带风暴警报

B．强热带风暴警报

C．台风警报

D．大风警报

患者女性，56岁。因“发作性头晕伴右侧进行性听力下降3年”来诊。查体：神清语利，定向力、理解力可，双侧瞳孔等大等圆，约3mm，对光反射灵敏；粗测右侧听力有明显下降，右侧角膜反射减退，双侧额纹、鼻唇沟等深，可抬额、鼓腮、吹口哨，右侧眼睑闭合力量较左侧弱，示齿嘴角稍向左歪斜。

Rinne试验：右侧气导＞骨导；左侧气导＞骨导，但右侧气导及骨导的时间均较左侧缩短。Weber试验结果：偏左侧；右侧前庭冷热水实验明显减退，右侧咽反射减退，Romberg征（+）；右侧肢体腱反射活跃，右侧肢体轻瘫试验（+），右侧巴宾斯基征阳性。既往史：无特殊。颅脑CT平扫提示：右侧桥小脑角稍低密度占位性病变。颅脑平扫增强MRI提示：右侧桥小脑角区占位性病变，T₁呈等信号，T₂呈高信号，增强可表现为不均匀强化，有囊变；肿瘤大小约为4.2cm×3.5cm×3.3cm。患者拟诊断为听神经瘤。

关于听神经瘤患者听力损害的特点，描述正确的是（）

A.常表现为非对称性的听力下降

B.高频听力损害更为明显

C.主要表现为神经性听力损害，Weber试验偏向健侧

D.与纯音听力下降相比，语音分辨率下降更为明显

E.以耳鸣伴进行性听力下降为特点

F.以低频听力损害为主