【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"))
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"))
举一反三
- The meaning of a word is not an unanalyzable whole. It may be seen as a complex of different semantic features. For example, the meaning of the word "woman" may be analyzed into three components: . A: HUMAN, YOUNG, MALE B: HUMAN , YOUNG, FEMALE C: HUMAN, ADULT, FEMALE D: HUMAN, ADULT, MALE
- On a resume, the correct information about gender is （ ）. A: Female B: Man C: Woman D: Male
- 人们一般用 “gender”来表示生理性别， 或 male 或 female
- 人们一般用“gender”来表示生理性别，或male或female
- German has three _______but French only has two. A. genders B. gender C. male D. female