无线耳机常用的连接方式是（） A.音频线连接 B.USB连接线 C.双绞线连接 D.

My mother is a diligent and kind woman. She is very busy from morning till night. As a teacher, she works hard.    1   Both my brother and I love her dearly as she loves us.

My mother has been teaching math at a middle school in my hometown. She goes to work early in the morning and does not return home until late in the afternoon.    2   She treats them with patience and teaches them well. For her excellent quality and very good teaching results, she has been elected as a model teacher several times.

  3  . Every day, when she comes back home from work, she sets about doing housework, sweeping the living room and bedrooms or cleaning the furniture, and putting everything in good order. She seems to be busy all the time. As she has been very busy working every day, she looks older than her age. But she looks as cheerful and happy as ever. Mother never buys expensive dresses for herself, but she often buys some inexpensive but high quality clothes for us.    4   She just eats a plain meal outside when she is too busy to cook herself. She lives a busy yet simple life, without any complaints.

Often she says to us, “work while you work, and play while you play. That is the way to be happy and gay. If you do not work, you will become lazy and be of no use to society”. What a piece of good advice this is!    5  . This advice of hers will always serve as a guide to my behavior. My mother is great indeed, and I always feel proud of her.

A．She enjoys listening to classic music.

B．As a mother, she takes good care of us and gives us every comfort.

C．She loves her students and cares for them.

D．She never goes to expensive restaurants to enjoy meals.E. My mother is hard-working and never wastes money.

F. I never forget it and always bear it in my mind.

G. Can you tell us something about your mother?

科学研究表明，对幼鼠注射或口服睾丸酮后，出生仅14天的雄鼠就表现出交配行为。如果将公鸡的睾丸摘除，公鸡将不再鸣啼，鸡冠萎缩，求偶行为消失；重新植入睾丸，则公鸡的特征和交配行为又得以恢复。这一事实说明[ ]

A．性激素与性行为之间有着直接的联系

B．被割除睾丸的公鸡变成了母鸡，因而不再鸣啼

C．睾丸酮属于雄性激素，在雌性体内不存在

D．幼鼠和公鸡的有关特征和行为变化是激素和神经系统共同作用的结果

注塑机上喷嘴温度的选取通常是（）料筒最高温度的，这是为了防止熔料在喷嘴处产生流涎现象。

A、高于

B、低于

C、等于

D、不一定

治疗阴痒的基本处方是（）。

A.太冲

B.中极

C.蠡沟

D.曲骨

E.三阴交

①日本政界的一些人妄图______日本侵华的历史，引起中日两国人民的强烈反对。
②端午节，民间有在身上挂香荷包的习俗，据说，这样可以______疾病。
③见到这一情景，她那满腔怨恨，似乎一下子都______了。
填入画横线部分最恰当的一项是( )。

A．窜改 驱除 融解
B．篡改 祛除 融解
C．窜改 祛除 溶解
D．篡改 驱除 溶解