A. 25 meters (82 feet)
B. 100 meters (328 feet)
C. 500 meters (1640 feet)
D. 1000 meters (3280 feet)
第1题:
A. handicapped
B. physical
C. limited
D. maximum
第2题:
When William hurried home, he found that his mother ____already ____to hospital.
A、has; been sent
B、had; sent
C、has; sent
D、had; been sent
第3题:
Distance()表示距离
第4题:
A.Has-arelationshipsshouldneverbeencapsulated.
B.Has-arelationshipsshouldbeimplementedusinginheritance.
C.Has-arelationshipscanbeimplementedusinginstancevariables.
D.Is-arelationshipscanbeimplementedusingtheextendskeyword.
E.Is-arelationshipscanbeimplementedusingtheimplementskeyword.
F.Anarrayoracollectioncanbeusedtoimplementaone-to-manyhas-arelationship.
G.TherelationshipbetweenMovieandActressisanexampleofanis-arelationship.
第5题:
第6题:
15、实平面上任意一点到原点的距离函数可以定义为 distance :: Float -> Float -> Float distance x y = ... distance x y 表示坐标点(x,y)到原点(0, 0)的距离。请判断下面哪些表达式是类型错误的。
A.distance (1,2)
B.distance (1+2)
C.distance (1+2) 5
D.distance (1+2) (2+3)