以下设计属于正方向构思的是（）。 A.以女性的温柔作为化妆品的宣传母题 B.以老人的

如图所示，电源电压为12V，当S₁、S₂闭合，S₃断开时，电流表的示数为0.4A；当S₂、S₃闭合，S₁断开时，电流表的示数为0.6A。则S₁、S₃断开，S₂闭合时电压表的示数为_______；S₁、S₃闭合，S₂断开时，电流表的示数为_________。

治疗自发性心绞痛最有效的药物是（）。

A.硝苯地平

B.氨酰心胺

C.硝酸甘油酯口服

D.普萘洛尔

E.维拉帕米

When I was young, my parents ran a snack bar in our small town.

One evening in early April, my mother told me to fill in at the snack bar (1) a worker who had the flu. I told her I would mess it up, (2) I had never worked at the bar before. I (3) that instead of making money, I would end up owing it.

"You can do it, " said my mother, " (4) , you won’t get much business until lunch. "

"But I’ll never remember the orders, and I’m no good (5) money. Please, Mom, don’t (6) me. "

"Then I’ll help you", she said.

I shrugged my shoulders. I thought my mother’s (7) was a bad one, but I (8) .

When I got to the bar the next day, I found my mother was (9) . Because the weather that day was rainy and cold, people wanted hot snacks and drinks. (10) , I was really slow at taking the orders and making change. The line of people grew, and everybody seemed (11) , I was so nervous that my hands shook, and I (12) a cup into pieces. What a mess! Then my mother came to (13) me, and she also showed me how to make (14) If someone gave me $ 5 for something that cost $ 3.25, I handed over (15) quarters and a dollar and said, "75 cents makes four dollars, plus one dollar makes five. " Things went more (16) after that.

By the end of the day, I could remember orders, (17) the bill, and make change quickly with a smile. I was even a little (18) when the sun came out and dried up business. My mother said she was proud of me, and when she (19) that I work at the snack bar again next year, I did not even shrug. I was too busy (20) the restaurant I would open one day.

12（）。

A. damaged

B. destroyed

C. broke

D. ruined

下颌远中，舌侧倾斜的基牙，设置环形卡环时，其卡环臂尖端位于基牙何部位

A．基牙近中缺隙侧邻面
B．基牙远中邻面
C．基牙颊侧近中倒凹区
D．基牙侧近中倒凹区
E．基牙颊侧远中倒凹区

罗讷河发源于阿尔卑斯山，每年注入地中海的水量占注入地中海河水总量的1/6以上，但是全流域性的大洪水并不多见。从1880年开始，瑞士为了确保电力供应，在上游山地建造了多座高海拔水库，在夏季蓄积高水位。下图示意罗讷河水系。罗讷河全流域性大洪水并不多见的主要原因是（）

A、上游湖泊和沼泽的调蓄作用

B、不同河段汛期时间不同

C、水库的修建，调节径流

D、流域降水较少，年际变率小