（）two pens in the pencil---box.

—How many pens would you like, sir？—Well, I want_____of these.

A. two dozen.

B. two dozen of.

C. two dozens

D. two dozens of

A.iamb …pentameter

B.octave …sestet

C.introduction … conclusion

D.rhythm …rhyme

A.rusted

B.used

C.washed

D.salted

A. site id

B. policies

C. circuit id

D. extended communities

A. IGP routes advertised by P routers

B. IGP routes advertised by PE routers

C. VPN routes advertised by PE routers

D. VPN routes advertised by CE routers

______of the young men in our village find odd jobs in the city.

A. Half

B. Fifty percent

C. Two fifths

D. All the above

听力原文： Now I'd like to talk to you about the final exam. The exam will be held next Thursday, he last day of the exam week. Remember to bring two or three pens in case one is out of ink. Unlike the mid-term this test will not include multiple choice questions. It will consist entirely of essays. You'll have to answer three of the five essay questions. The exam will be comprehensive. This means you will be responsible for all of the subject matter we're covered in class. I would suggest you review the mid-term as well as the textbook and your class notes. The final will count for 50% of your grade in the course; the research project will count for 20%; and the mid-term 30%.

I'll be in my office almost all day on Tuesday of next week. If you run into any problem, please feel free to stop in. Good luck with your studying! I'll see you on Thursday.

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A．On a Tuesday.

B．On a Wednesday.

C．On a Thursday.

D．On a Friday.

We can learn from the first two paragraphs that______.

A．holidays like Thanksgiving make people forgetful

B．family members always poke unkind comments toward each other

C．forgetting is important to human experiences

D．cognitive experts tell us the meaning of the world

from PE service access side flows to network side, one new Ethernet header and two TMPLS label headers are added to service packets, which are 26 bytes long. If length of packets received on UNI side is larger than 1642 bytes, the packets due to addition of header will be dropped at NNI side, affecting service performance. Thereby, make sure to enable jumbo frame. function on all service related interfaces with command()。

ws from service access side of PE device to network side, new Ethernet header and two TMPLS labels need to be added for service packets, which may increase the packet length by()bytes. When UNI side receives packets with length over 1642 bytes, packets will be dropped due to the addition of header at NNI side, affecting service performance. Therefore, jumbo frame. forwarding function on all service related interfaces should be enabled.

A.20

B.24

C.26

D.30