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【单选题】
The sentence 'Hundreds of the vast blocks had been built before anyone began to doubt about whether they were good solutions or not' means that ______.A.
it was not until hundreds of the vast blocks had been built that people began to doubt whether they were good solutions or not
B.
hundreds of the vast blocks had not been built until anyone began to doubt whether they were good solutions or not
C.
people began to doubt whether they were good solutions or not before hundreds of the vast blocks had been built
D.
since hundreds of the vast blocks had been built, some people began to doubt whether they were good solutions or not
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【单选题】在Excel 2007中，设单元格A1中的值为-1，B1中的值为1，A2中的值为0，B2中的值为1，若在C1单元格中输入函数“IF（AND（A1>0，B1>0）,A2，B2）”,按回车键后，C1单元格中的值为（）。
A.
-1
B.
0
C.
1
D.
2
【单选题】在Excel 2007中，若在单元格A1中输入函数“=AVERAGE(4，8，12)/ROUND(4.2,0)”，按回车键后，则A1单元格中的值为（ ） 。
A.
1
B.
2
C.
3
D.
6
【单选题】在Excel 2007中，若在单元格A1中输入函数“ROUNDUP（3.1415926,2）”，按回车键后，则A1单元格中的值为（）。
A.
3.1
B.
3.14
C.
3.15
D.
3.1415926
【单选题】在Excel2007中，若在单元格A1中输入函数“=MIN(4,8,12,16)/ROUND(3.5,0)”，按回车键后，则A1单元格中的值为（）。
A.
1
B.
4
C.
8
D.
16
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