In human, color blindness is caused by sex linked recessive genes, while blue eye is caused by autosomal recessive genes. A blue eyed woman whose father is color blind marries a brown eyed man whose mother is blue eyed. How many of their sons are blue eyed? ( ) A: 1/2 B: 1/3 C: 1/4 D: 3/4

I don’t like the way_______he eyed me.

In pigs, eye color is controlled by a single gene with two alleles. A farmer crossed a homozygous green-eyed pig with a homozygous brown-eyed pig, producing blue-eyed offspring. If the blue-eyed pigs are then mated with each other, what would the percent of their offspring most likely have brown eyes? A: 0% B: 25% C: 50% D: 75%

【单选题】My name is John Brown.____is my first name,____is my last name. A. John;Brown B. Brown;John C. John Brown;John Brown D. Brown;John Brown

She quicklythe note without reading it. A: picked B: handed C: pocketed D: eyed

She has a jacket. A: leather brown beautiful B: leather beautiful brown C: eautiful brown leathe D: eautiful leather brown

The pretty woman has _____ hair. A: long brown B: own long C: a long brown D: a brown long

______ and the lesson began. A: In came Mr Brown B: Mr Brown in came C: In came he D: Came in Mr Brown

Have you invited _________? A: the Browns B: the Brown’s C: Brown’s D: the Browns’

下面代码的输出结果是（ ）。 s=("seashell","gold","pink","brown","purple","tomato") print(s[1::2]) A: ("seashell","pink","tomato") B: ("seashell","gold","pink","brown","purple","tomato") C: ('gold', 'brown' ) D: ('gold', 'brown', 'tomato')