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【简答题】
变量dx、dy和dz的声明和初始化如下: double dx = (double)x; double dy = (double)y; double dz = (double)z; 若float和double分别采用IEEE754单精度和双精度浮点数格式,sizeof(int)=4,则对于任意int型变量x、y和z,判断以下关系表达式是否。若则给出证明;若不则给出结果为假时x、y和z的取值。 (1) dx*dx >= 0 (2) (double)(float)x==dx (3) dx+dy==(double)(x+y) (4) (dx+dy)+dz==dx+(dy+dz) (5) dx*dy*dz==dz*dy*dx (6) dx/dx==dy/dy
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举一反三
【单选题】The decision of the university to close the swimming pool at weekends____an angry reaction among students.
A.
created
B.
provoked
C.
stimulated
【简答题】Fill in the follwoing blanks with a proper word: e.g. After that, finding the track at the [填空1] of dormitory, you can pass the second stadium [填空2] and go down to the swimming pool at last.
【单选题】_______fathers are both scientists.
A.
jim's and Bob
B.
jim's and Bob's
C.
jim and Bob's
D.
jim and Bob
【单选题】We________ in the swimming pool at that time.
A.
are planning to swim
B.
were planning to swim
C.
are planning swimming
D.
were planning swimming
【单选题】_______fathers are bothscientists.
A.
Jim's and Bob
B.
Jim's and Bob's
C.
Jim and Bob's
D.
Jim and Bob
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