Research shows that humans ______ from selfish to unselfish behavior when they are watched.
#11684
A
tell
B
switch
C
range
D
distinguish
推荐题目
“Our brand is selling just like hot cakes,” said the director with a ______ expression on his face.
#10842
A
satisfying
B
satisfaction
C
satisfied
D
satisfactory
_________money has been invested to promote the traffic conditions of this city.
#11209
A
A plenty of
B
A large amount of
C
A great number of
D
A large sum
This amber necklace is a real _______ at such a low price.
#11795
A
design
B
bargain
C
glory
D
character
After great efforts President Obama was elected to a second＿＿＿ of office
#11205
A
turn
B
round
C
term
D
stage
It is______that my new classmates are_____helpful.
#10917
A
sure; very
B
right; rather
C
exact; fairly
D
certain; quite