______the poem a second time, it will be much better under stood.A.Your having readB.Havin
______the poem a second time, it will be much better under stood.
A.Your having read
B.Having read
C.When you read
D.While reading
______the poem a second time, it will be much better under stood.
A.Your having read
B.Having read
C.When you read
D.While reading
A.70 sec
B.140 sec
C.240 sec
D.270 sec
The poem Isabella was written by ______.
A.Shelly
B.Byron
C.Wordsworth
D.Keats
A.仅由一个SEC控制
B. 由两个SEC同时控制
C. 由两个SEC控制,一个SEC在工作状态,另一个在备用状态
D. 由一个ELAC和一个SEC控制
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