问题 选择题

已知人类的双眼皮与单眼皮是一对相对性状,双眼皮是由显性基因(R)控制,一对双眼皮的夫妇,生下的儿子为单眼皮,这对夫妇的基因组合为( )。

A.Rr

B.RR

C.rr

D.Rr或RR

答案

答案:A

单眼皮儿子的基因组成是rr,两个r基因分别来自他的母亲和父亲,那么双眼皮的夫妇基因组成都为Rr。

填空题
单项选择题

Elle Woods has it all. She’s the president of her sorority, a Hawaiian Tropic girl, Miss June in her campus calendar, and, above all, a natural blonde. She dates the cutest fraternity boy on campus and wants nothing more than to be Mrs. Warner Huntington Ⅲ. But, there’s just one thing stopping Warner from popping the question: Elle is too blonde. Growing up across the street from Aaron Spelling might mean something in LA, but nothing to Warner’s East-Coast blue blood family. So, when Warner packs up for Harvard Law and reunites with an old sweetheart from prep school, Elle rallies all her resources and gets into Harvard, determined to win him back. But law school is a far cry from the comforts of her poolside and the mall. Elle must wage the battle of her life, for her guy, for herself and for ail the blondes who suffer endless indignities every day.
"Legally Blonde" is an American comedy which was released in 2001 wordwide. The heroine is played by Reese Witherspoon, who does well in the movie.
In my opinion, strictly, "Legally Blonde" is a not-so-bright comedy. Why The combination of a beautiful but silly blonde and the strict but dull law school makes inconsistent musical notation. But I am well disposed to the lovely girl at the same time. There are a lot of reasons. For one thing, the outstanding performance of Reese Witherspoon makes a deep impression on my mind. For another, the magic and special character of the heroine Elle moves me. She is sensitive to fashion and good at making up, but not the silly Billy. Her perfect observation also lights up our eyes. When she went to visit the prisoner, with a CalvinKlein blouse, a suit of Clinique and the last Cosmo, who could doubt her ability to get the trust When she won the case by her experience about her life, nobody could deny that sometimes a handful of common sense was worth a bushel of learning.

What does "Miss June in her campus calendar" underlined in Paragrah 1 refer to

A. The name of a girl on campus.
B. The sixth month on the calendar.
C. The summer month of the year.
D. The portrait of Elle used for the sixth month of the calendar.