一质点做匀加速直线运动，第三秒内的位移2m，第四秒内的位移是2.5m，那么以下说

I am an American student. My name is Vicky King. I have a big family. I have two brothers. They and I are in the same school. My grandma and grandpa live with us. They are my father’s parents.

My father is from England, but my mother’s hometown is at the foot of the Great Wall of China. My brothers and I were all born in New York. Because my father works in a school in New York. He teaches English.

People often ask us, “What do you like eating?” It is not easy to answer this question! Well, let me tell you.

My grandpa has been to India, so he likes Indian food. My father likes hot dogs, potato chips and hamburgers. My mother likes rice, noodles and dumplings. She often does very nice Chinese food for us. So my brothers and I like Chinese food a lot but English food a little. We don’t like Indian food at all.

小题1:This is a family of_________

A．three

B．five

C．six

D．seven小题2:Her grandfather is __________.

A．from England

B．from China

C．from India

D．from America小题3:Her father is a ________

A．worker

B．doctor

C．teacher

D．player小题4:Her mother likes Chinese food because she_________.

A．has been to China

B．is from China

C．can do Chinese food

D．knows her children like it小题5:The three children like___________ food very much.

A．Chinese

B．English

C．Indian

D．American

小儿认出并会叫“爸爸、妈妈”的年龄一般在（）。

A.3个月

B.8个月

C.12个月

D.24个月

E.36个月

呈正态分布的计量资料，计算集中趋势的指标最好选择

A．μ
B．M
C．S
D．C
E．Q

箱体工件的工艺性和加工工序都比较复杂，各种尺寸和位置精度要求较高，而划线既是加工前的（），又是加工时校正的依据。

A.工序

B.工艺

C.工步

D.程序

数浪的交替规则描述的是（）和（）。

A.第一浪；第二浪

B.第二浪；第四浪

C.第三浪；第五浪

D.第一浪；第五浪