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For i = 1 To n \ 2
iMax = i: iMin = i
For j = i + 1 To n - i + 1
If a(j) > a(iMax) Then iMax = j
If a(j) < a(iMin) Then iMin = j
Next j
If iMax = i Then
Else
End If
Next i
上述程序段中方框处可选语句为：
①temp = a(i): a(i) = a(iMin): a(iMin) = temp
②temp = a(iMin): a(iMin) = a(n - i + 1): a(n - i + 1) = temp
③temp = a(iMax): a(iMax) = a(n - i + 1): a(n - i + 1) = temp
则（1）（2）（3）处的语句依次为（ ）
| A．①②③ | B．①③② | C．②①③ | D．③②① |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
