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【单选题】
已知类X中的一个成员函数说明如下:void Set(X &a) ,其中X &a的含义是( )。A.
指向X 的指针为a
B.
将a 的地址赋值给变量Set
C.
a是类X的对象引用,用来作为Set()的形参
D.
变量X与a 按位相与作为函数Set()的形参
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举一反三
【单选题】According to the result of the tests of the body's energy needs, physiologists concluded that _______.
A.
two meals a day is best to the elderly people
B.
three-meal pattern is suitable nutritionally to the average adult.
C.
children need more than three meals a day
D.
having snacks is very popular in America.
【简答题】分离的,分隔的;相隔离,成距离
【简答题】(空间、时间方面)成距离,相间隔,分离的,分隔的
【单选题】About fifty years ago, plant physiologists set out to grow roots by themselves in solutions in laboratory flasks. The scientists found that the nutrition of isolated roots was quite simple. They requi...
A.
The relationship between a plant's roots and its shoots.
B.
What can be learned by growing roots in isolation.
C.
How plants can be grown without roots.
D.
What elements are necessary for the growth of plants.
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