魏忠贤

阅读理解。

                                                                The Lost Ring

     One day a man went home to his wife and said, "I have bought something for you."

     "Oh, thank you" said his wife. "What have you bought?" "I've bought a gold ring. Here it is."

     He held it out for his wife to see. Then he dropped it. "Oh dear" he said. "I have dropped it."

     He began to look for it on the floor but it was dark inside the house and he could not see anything. He

  went outside the house and began to look for the ring in the street. Just then a friend came along.

     "What's the matter?" he asked.

     "I have lost a ring." said the man. "Where did you lose it?"

     "I lost it inside my house."

     "You lost your ring inside your house but you are looking for it outside in the street. That seems very

  foolish."

     "Ah," said the man, "but it is dark inside my house. I shall never find it there. But here in the street there

  is more light and I can see more clearly.

     (Notes: ring 戒指 gold 金,黄金)

1. One day a man went to the street to buy a gold _____.

    A. watch        

    B. clock      

    C. ring        

    D. ear-ring

2. He dropped the ring _____the house.

    A. inside        

    B. outside      

    C. in front of    

    D. beside

3. At first he looked for the ring in the _____.

    A. street        

    B. shop        

    C. road        

    D. house

4. Next he looked for the ring in the _____.

    A. room        

    B. garden      

    C. house        

    D. street

5. Do you think that the man was _____? Yes, I do.

    A. clever        

    B. foolish      

    C. bright        

    D. wise

有内在拟交感活性的β受体阻滞剂是

A．普萘洛尔

B．美托洛尔

C．阿替洛尔

D．阿普洛尔

E．拉贝洛尔

现在有含盐率30%的盐水，往里面添加12克盐，要保持含盐率不变，则需要加水______克．

《棉花加工资格认定和市场管理暂行办法》规定，因违法被撤销原棉花加工资格，至提出申请之日尚未满（）的，资格认定机关不受理申请者提出的棉花加工资格认定申请。

A、半年

B、一年

C、二年

D、三年

某学习小组通过实验来研究用电器D的导电规律。他们在实验中测得用电器D两端的电压与通过D的电流的数据如下表：

（1）请根据上述表格中的数据，在图中用笔连线补充完成该电路的实物图；

（2）利用这些数据绘出的用电器D的伏安特性曲线如图所示。已知A、B两端电压恒为1.5V，请结合图线解决下列问题：

①若把用电器D接入如图1所示的电路中时，电流表的读数为0.100A，则定值电阻R₀阻值为________Ω；

②若将两个与上述电阻相同的定值电阻R₀并联后接入同一电路，如图2，则在该电路中用电器D的工作压为__________V。