the differing light colors
one system having odd numbers while the other system has even numbers
one system using horizontal bands while the other system uses vertical stripes
the difference in the periods of the light
第1题：
Peter has two brothers. One of them is a teacher;_____ is a driver.
A. another
B. the other
C. other
D. each other
第2题：
A. Peers are statically defined.
B. Peers exist within the same AS.
C. Peers must be directly connected to each other.
D. Peers advertise routes learned from other IBGP neighbors.
第3题：
two men batter each other to pulp in the boxing ring.
___________________________________________________________
第4题：
You need to design a configuration for Exchange Server storage that meets the business and technical requirements. What should you do？（）
第5题：
A vertex of the navigational triangle is NOT located at the ______.
A.elevated pole
B.celestial body
C.zenith
D.coaltitude
第6题：
A. crawled
B.crouched
C.pressed
D.crashed
第7题：
These flowers are watered______.
A. each other day
B. every other day
C. each of two days
D. every of two days
19．答案为B 这些花每隔一天浇一次水。表示隔天，用every，并且不用加of。
第8题：
Let's stop shouting at each other and talk about this like two__________ people.
A． sensitive
B． rational
C． exhausted
D． resourceful
第9题：
第10题：
Which two statements accurately describe an IBGP peering session?（） (Choose two.)