定义字典dict1 = {'name':'xiao','sex':'female','age':18}，取出值female A: dict1['name'] B: dict1['sex'] C: dict1['female'] D: dict1[3]

【单选题】生成如下数据框的语句是? weight height gender age 1 80 180 male teen 2 75 170 male teen 3 60 165 female adult 4 52 150 female adult A. X ,gender=c("male", "male", "female", "female"),age=c("teen","teen","adult","adult")) B. X ,gender=c("male", "male", "female", "female"),age=c("teen","teen","adult","adult")) C. X ,gender=c(male, male, female, female),age=c(teen,teen,adult,adult)) D. X ,gender=c("male", "male", "female", "female"),age=c("teen","teen","adult","adult"))

Research 1 Number of subjects: 1) ___________ of friends of the opposite sex Method: Each pair of friends were separated and each member was asked questions about his or her 2) _____________ toward the other one. Findings: 1 Men were more likely to 3) ___________ their female friends, and they tended to believe that their female friends felt the same way. Findings: 2 Women were generally 4) __________ to the men and they believed their male friends also felt the same way. 3 When a female friend was in love with someone else, men

There are 2 ___________ in the show--- Good Morning World . One is male, the other is female

2.在合并x.sav和y.sav为xy.sav(见下)时，是增加记录还是增加变量，（ x.sav 学生ID 性别 年龄 班级 1 female 19 C 2 male 20 C 3 male 20 C 4 female 20 D 5 female 19 D 6 male 18 D y.sav 学生ID 科目 成绩 1 物理 89 2 物理 67 3 物理 78 4 物理 69 5 物理 79 1 数学 79 2 数学 84 3 数学 83 4 数学 85 5 数学 66

Like the old, ______respected in some countries. A: the female is B: a female is C: C. a female are D: D. the female are

What are the stories in the book mainly about? A: Female heroes. B: Female leaders. C: Female artists. D: Female rebels.

5-5.The Reverend Mother said: "Whenever I'm feeling unhappy, Ijust try to think of nice things."

Fat is accumulated most quickly in young female deer.(Unit 2 Deer and the Energy Cycle)

female