For our middle school students, some courses are compulsory, while others are ________.
#19297
A
flexible
B
optional
C
impressive
D
significant
推荐题目
Alice kept perfectly still, ______ that the dog might attack her. “It was the most ______ experience of my life,” she told me later.
#18061
A
frightening; frightened
B
frightened; frightening
C
frightened; frightened
D
frightening; frightening
The Chinese river dolphin is one of the First-Grade State Protection animals, a (an) mammal with its name – water panda.
#17851
A
rare
B
official
C
extreme
D
universal
Put a tie on—it'll make you look more ______.
#20595
A
respected
B
respective
C
respectable
D
respectful
There will be ___ TV broadcast of the World Cup on CCTV Channel 5 this evening.
#20343
A
an alive
B
a lively
C
a living
D
a live
I haven’t seen______ this since I collected stamps.
#20461
A
as beautiful a stamp as
B
so anbeautiful stamp as
C
stamp as beautiful as
D
as anbeautiful stamp a