搜题请搜索小程序“爱下问搜题”
问题 单项选择题 案例分析题

图为“某地一处完全淹没在海面下的珊瑚礁体的等深线示意图”。读图，回答下列各题。

图中E、F两地的相对高度最可能是（）

A.15米

B.5米

C.20米

D.30米

答案

参考答案：A

解析：

图中F地等值线为20米，E地外围为礁坑，海拔较低，所以E处等值线数值应为36米，E地介于28米和36米之间，所以E、F两地的相对高度介于8米和16米之间，只有A项符合，A对。

考点：等值线图，相对高度计算。

单项选择题

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.

 

第（15）空应选择（）

A．two

B．three

C．four

D．five
查看答案
填空题

空气滤清器的作用：清除进入气缸前空气中夹带的灰尘和（），以减轻（）、（）、活塞环以及其它机件的磨损，延长发动机的使用寿命。
查看答案