​Which are the colours of life-saving appliances?‏ A: Orange, green or yellow. B: Orange, red or yellow. C: Orange, blue or green. D: Orange, yellow or green.

What are warm colors A: ed B: orange C: yellow D: anything in between

The hydrated nickel(II) ion is A: blue B: yellow C: orange D: colourless E: green

Which are the core colors of Chinese traditional colors? A: black and white B: red and cyan C: yellow and blue D: purple and orange

假设定义了：enum color {red=1, orange, yellow, green ,blue, purple, black};则blue的值是（

Which of the following colors are the core colors of Chinese traditional colors? A: black and white B: red and cyan C: yellow and blue D: purple and orange

【填空题】1. Yellow notices are issued in relation to ____________ including minors and victims of kidnappings, including those of __________________. A black notice is used to seek information on __________________. An orange notice _________a serious and an imminent__________________ including __________________.

Which color indicates the harmony between nature and human-beings? A: red and green or blue B: dark blue and yellow or brown C: blue and red or orange D: black and purple or pink

The red, orange and yellow lights contain ______. A: less heat than the other lights B: more heat than the other lights C: a great deal of heat D: a little heat

Ihavetwo(orange)______andthreebottlesof(orange)______here. A: oranges,oranges B: oranges,orange C: orange,orange D: orange,oranges