According to scientists, our mental abilities begin to____ from the age of 27 after reaching the highest level at 22.
#13700
A
differ
B
shrink
C
fail
D
decline
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Some blood types are quite common, others are regionally , and still others are rare everywhere.
#11203
A
distributed
B
contributed
C
obtained
D
Convinced
Though the working mother is very busy, she _____ an hour every day to spend with her daughter.
#12424
A
set out
B
set off
C
set about
D
set aside
He stopped and turned around _____.
#14342
A
every few meters
B
every other meters
C
every a few meters
D
every meters
Working abroad for many years, he has made a big _______ and started a company of his own.
#12570
A
difference
B
fortune
C
progress
D
breakthrough