Achieving a high degree of proficiency(精通）in English as a foreign language is not a mysterious _______ without scientific basis.
#11851
A
process
B
practice
C
procedure
D
program
推荐题目
When you visit a museum you must ask for _____ before taking photographs inside it.
#12788
A
promise
B
permission
C
consideration
D
support
. Don’t leave the window open—it’s ________ thieves to enter.
#12090
A
inviting
B
advising
C
persuading
D
getting
March 5th is the official “Learning from Lei Feng Day” when people are ______to learn from Lei Feng, a cultural image symbolizing selflessness and contribution.
#13761
A
called on
B
called up
C
called in
D
called off
Population experts say that by 2050 the world will have about 2 billion people aged over 60,____as today.
#14137
A
as three times
B
three times as many
C
three times many
D
three times many as