问题 单项选择题

某环保科用甲乙两方法同时测定污染水中溶解氧含量,在建立以容易测定的甲法结果推算乙法测定值的直线回归方程前,应首先()。

A.画出标准曲线

B.计算测定结果平均数

C.计算测定结果的标准差

D.以测定值绘制散点图

E.以测定值输入计算器进行统计指标计算

答案

参考答案:D

完形填空

One summer day when I was in high school, my father sent me to buy some tools for our farm. I loved ___31____ better than driving our family truck to do something. But this time I was not so happy___32___ my father had told me I would have to ask for credit ( 赊账) at the store.

___33_____ is a proud age. The young men at that age want respect (尊重) but not charity. I had seen many times that my friends were ___34____ when they asked for credit. We lived in a poor village,___35_____ was needed seriously I knew clearly how difficult it might be to make the store owner believe me and get the credit.

At Dali’s Brothers store. Buck Davi was talking to a farmer. After I finished   ___36_____ the things I wanted, I walked to him. “I need to put these on credit,”I said to him ____37____.

The farmer gave me a ___38_____look. But Buck’s face didn’t change in the slightest. “No problem,” he said in a relaxing voice, “ I believe your daddy will____39____them in time. " Then he turned to the farmer, This boy is Jame William’s son.”

The farmer nodded to me in a friendly way. At that time. I___40_____pride. Jame  William’s Son, these three___41____ opened a door to an adult’s respect and trust.

That day I___42____ that a good name was of great importance. My father’s good name had won our neighbors’ respect for our family. A good name, and the responsibility (责任) that came with ____43_____ encouraged us a lot. They made us be___44______ than we might be. We also wanted to be regarded as good people. __45__ acting like good people for a long time, we became good out of good habits.

小题1:A. something            B. anything               C. nothing

小题2:A. because              B. while                 C. unless

小题3:A. Six                  B. Sixteen               C. Sixty

小题4: A. influenced            B. cheered               C. refused

小题5:A. health                B. money                 C. freedom

小题6:A. choose                B. choosing               C. to cheese

小题7:A. carefully             B. angrily                C. easily

小题8:A. pleasant              B. kind                  C. strange

小题9: A. care for              B. pay for                C. look for

小题10: A. was full of             B. was surprised at       C. was famous for

小题11: A. letters              B. words                C. sentences

小题12:A. discover             B. discovered             C. have discovered

小题13:A. it                    B. him                   C. them

小题14: A. better               B. stronger                 C. cleverer

小题15:A. With                 B. For                      C. By

单项选择题