By the time he graduated from high school, he________(learn) five thousand words.
第1题:
2. Lily and Lucy often leave__________ school __________ half past seven.
A.from,to
B.for,in
C.to,from
D.for,at
第2题:
下面关于time库引用不正确的是:
A.from time import strftime
B.from time import *
C.import time
D.from * import time
第3题:
以下程序产生的是占空比____的时钟信号? parameter High_time = 5,Low_time = 20; reg clk; always begin clk = 1; #High_time; clk = 0; #Low_time; End
A.20%
B.10%
C.40%
D.50%
第4题:
Relaxing,sad and difficult are________(描述) words.
第5题:
下面关于time库引用不正确的是?
A.import time
B.from time import strftime
C.from time import *
D.from * import time