字典‘red’:41,’blue’:3和’blue’:3,‘red’:41是不一样的。

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

以下定义枚举类型正确的是() A: enum<br/>color={red, yellow, blue}; B: enum<br/>color={“red”, “yellow”, “blue”}; C: enum<br/>color{“red”, “yellow”, “blue”} D: enum<br/>color{red=3, yellow, blue};

若定义enum color {red=2, yellow, blue, white};那么blue的值为___________。 A: 0 B: 2 C: 3 D: 4

5 Didn't you see that'blue cat/blue'cat? A: 'blue cat B: blue'cat

下列枚举类型的定义中，包含枚举值3的是（ ）。 A: enum test {RED, YELLOW, BLUE, BLACK}; B: enum test {RED, YELLOW=4, BLUE, BLACK}; C: enum test {RED=-1, YELLOW,BLUE, BLACK}; D: enum test {RED, YELLOW=6, BLUE, BLACK};

假设定义了：enumcolor{red=1,orange,yellow,green,blue,purple,black};则blue的值是（） A: 4 B: 5 C: 3 D: 6

Sandra usually wears ______ sunglasses. A: big blue B: blue big C: blue nice

下面为网页设置背景色正确的是()。 A: document.body.style.backgroundColor='blue' B: document.style.backgroundColor='blue' C: ody.style.backgroundColor='blue' D: document.body.style.background_color='blue'

下面为网页设置背景色正确的是（）。 A: document.style.backgroundColor=’blue’ B: body.style.backgroundColor=’blue’ C: document.body.style.backgroundColor=’blue’ D: document.body.style.background_color=’blue’