Chest pains can be a warning ____of heart problems.
#5747
A
signal
B
sign
C
mark
D
symbol
推荐题目
The Browns stood staring at the happy _______ of children playing in the park.
#6730
A
scene
B
landscape
C
scenery
D
view
As the quality of the city’s air continues to give rise to ______, the residents are encouraged to set off fewer fireworks.
#5265
A
descriptions
B
comparison
C
concerns
D
emergency
Read the ______ carefully before you do the test.
#5894
A
directions
B
explanations
C
situations
D
occupations
I always make a _______ before going shopping so that I won’t forget what to buy.
#6053
A
diary
B
report
C
note
D
list
