As we know, the coming of radio in this century made ocean sailing much ______.
#19856
A
cheaper
B
safer
C
easier
D
faster
推荐题目
Harry Potter stories are____both the teenagers and adults. 
#19000
A
appealing to.
B
appeal to .
C
allergic to
D
appealing for
 We call Sam Smith      .
#34948
A
Mr. Smith
B
Mr. Sam
C
Mrs. Smith
D
Mrs. Sam
When electric cars become ______ , we’ll need to build more charging stations.
#19202
A
available
B
accessible
C
attractive
D
alternative