查体发现患者旋颈试验阳性，四肢感觉运动均未见异常，最可能的诊断是A．脊髓型颈椎病 B

小题1: What is necessary to know when we speak English besides using grammar?

A．Introduction.

B．The culture.

C．Grammar.

D．Topics.小题2: "When speaking to a stranger, ask them where they are from and then make a connection (联系) with that place" can be used as a sentence to_______.

A．speak about location

B．talk about sports

C．address people

D．talk about work小题3: We can learn from the text that_______.

A．Americans shake hands when greeting same sex friends

B．different sex friends should hold hands when first meeting

C．when you speak to others, it's polite to look into their eyes

D．smoking is not allowed in the modem United Sates小题4: What would be the best title for the text?

A．American English Tips.

B．Language Differences.

C．The Different Language Culture.

D．American Customs.

根据传染病流行的三个基本环节，分析、回答下列问题

（1）当甲将病传给乙时，此时甲是______，乙是______，患病的乙又会传染给丙，此时乙是______

（2）若乙得一次病后，就不再感染此病，说明乙内产生了______，此种物质产生主要与什么细胞有关？______．

如图所示，匀强磁场方向垂直纸面向里，甲、乙、丙、丁四个带正电的点电荷沿四个方向、以大小相同的初速度v₀垂直磁场方向进入磁场．则进入磁场瞬间．受到洛伦兹力方向向下的点电荷是（　　）

A．甲

B．乙

C．丙

D．丁

成人脊髓下端平对

A．第12胸椎
B．第1腰椎
C．第2腰椎
D．第3腰椎
E．第4腰椎

除哪一项外，下列都是病毒性肝炎的变性改变()

A．气球样变

B．嗜酸性变

C．脂肪变性

D．胞浆疏松化

E．混浊肿胀