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【单选题】
下列各组离子一定能大量共存的是A.
在含大量Fe 3+ 的溶液中：NH 4 + 、Na + 、Cl - 、SCN -
B.
在含有Al 3+ 、Cl - 的溶液中：HCO 3 - 、I - 、NH 4 + 、Mg 2+
C.
在c(H + )=1×10 -13 mol·L -1 的溶液中：Na + 、S 2- 、SO2- 3、NO 3 -
D.
在溶质为KNO 3 和NaHSO 4 的溶液中：Fe 2+ 、Ca 2+ 、Al 3+ 、Cl -
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【单选题】Which of the following is not part of the construction of the building?
A.
door and window
B.
base
C.
foundation
D.
roof
【单选题】The construction of the laboratory______by the end of the year.
A.
will complete
B.
will have completed
C.
will be completed
D.
will have been completed
【单选题】The workers working day and night , the construction of the building _____ by the end of this month
A.
will be completing
B.
will complete
C.
will have completed
D.
will have been completed
【单选题】According to paragraph 6, all of the following statements about the construction of the monument on Mount Rushmore are true EXCEPT:
A.
Lincoln Borglum completed the project his father began.
B.
It took less than fifteen years to complete the monument.
C.
Few deaths occurred as a result of the construction.
D.
The monument was created, in part, by the use of dynamit
【单选题】The construction of the railway ______ by the end of the next moth.
A.
must have been completed
B.
has been completed
C.
must be completed
D.
must complete
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