German has three _______but French only has two.
A. genders
B. gender
C. male
D. female
A. genders
B. gender
C. male
D. female
举一反三
- 【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"))
- He has two children, but the elder is ______ of the two. A: clever B: B. cleverer C: C. cleverest D: the cleverer
- 2. _______ has thelargest number of speakers. A: A. China B: B. Chinese C: C. French D: D. English
- There ______ a pen, two pencils and three books on the desk. A: are B: B. is C: has D: D. have
- In the third generation, if the affected male marries a female who is a carrier for the trait and has two children, what is the probability that their first child is a female who is a carrier for the trait? A: 0% B: 50% C: 25% D: 100%