A、 Since
B、 While
C、 Because
D、 If
答案:B
A、 Since
B、 While
C、 Because
D、 If
答案:B
A. modes
B. cays
C. devices
D. manners
A. when
B. whether
C. although
D. but
A. for
B. at
C. in
D. up
A. is used to have problems
B. used to have problems
C. is used to having problems
D. used to having problems
A. cool
B. easy
C. difficult
D. important
A. simplified
B. has simplified
C. has been simplified
D. simplifies
A. cope with
B. handle with
C. dispose of
D. reckon on
A. taken
B. sent
C. ordered
D. assigned
A. keep out
B. keep down
C. keep up
D. keep back
A. memorable
B. emotional
C. dominant
D. acceptable