蝴蝶：蟋蟀。（）
A.桑椹：鲜花
B.海棠：海参
C.鹦鹉：海鸥
D.恒星：太阳
参考答案：C
解析：
蝴蝶和蟋蟀都是昆虫；鹦鹉和海鸥都是鸟类。
程序设计语言的定义一般应包括（）几个方面。
A．语法、语义和语句
B．语法、语义和语用
C．语义、语句和语用
D．语法、语用和语句
As an extinguishing agent,foam（）.
A.couducts electricity
B.should be directed at the base of the fire
C.is most effective on burning gases which are flowing
D.extinguishes by cooling oil fires blow ignition temperature
