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To tell ______ truth, he is at ______ loss what to do currently．
#9378
A
/; a
B
the;/
C
the; a
D
/;/
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Recently some studies have found that learning ____________ second language can lead to _______________ increase in one’s brain power.
#10486
A
a; the
B
不填; the
C
a; an
D
the; an
 Sam has been appointed ________ manager of the engineering department to take ________ place of George.(2012·重庆)
#7906
A
/；/
B
the；/
C
the；the
D
/；the
Many______ scientist wants to be ______second Newton.
#10097
A
a;the
B
a;a
C
/;a
D
/;the
Recently, there is ____ boom（繁荣）in population mobility and according to ____ national population survey of 2004, 17 percent of the population move every year.
#8081
A
the; a
B
a; the
C
/; a
D
the;/
Looking back，we have reasons to believe that ___more prosperous and stronger China will surely make new contributions to _____civilization of mankind．
#10148
A
a；a
B
a；the
C
the；the
D
the；a