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Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： Some people seem to have a talent for learning languages. They can pick up new vocabulary, master rules or grammar, and learn to write in the new language more quickly than others. They do not seem to be any more intelligent than others, so what makes language learning so much easier for them？ Perhaps if we take a close look at them, we may discover a few techniques.
First of all, successful language learners are independent learners. They do not depend on the book or the teacher; they discover their own way to learn the language. They are good guessers who look for clues and form. their own conclusions. When they guess wrong, they guess again. They try to learn from mistakes.
Successful language learning is active learning. Therefore, successful learners do not wait for a chance to use the language; they look for such a chance. They find people who speak the language and ask these people to correct them when they make a mistake. They are not afraid to repeat what they hear or to say strange things. It is more important for them to learn to think in the language than to know the meaning of every word.
Finally, successful language learners are learners with a purpose. They learn the language because they want to communicate with people who speak it and learn from them.
What kind of language learner are you？ If you are a successful language learner, you have probably been learning independently, actively, and purposefully. Otherwise, you might as well try some of the techniques outlined above.
26. What's the purpose of this passage？
27.What do independent language learners do？
28.What do active learners find more important than knowing the meaning of every word？
(27)
A．To teach students how to communicate with native speakers.
B．To introduce a few techniques to be successful language learners.
C．To encourage slow language learners not to lose their hearts.
D．To tell the audience how to enlarge their vocabulary more quickly.
更多“Section BDirections: In this section, you will hear 3 short passages. At the end of each p”相关的问题
第1题
A. The multicast sources must register with the RP to form the multicast distribution tree.
B. An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).
C. The multicast receivers must register with the RP to form the multicast distribution tree.
D. An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).
E. An RP is required only in networks running Protocol Independent Multicast sparse - dense mode (PIM - SDM).
F. To form the multicast distribution tree, the multicast sources register with and the receivers join the RP.
第2题
A. The multicast sources must register with the RP to form the multicast distribution tree.
B. An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).
C. The mu lticast receivers must register with the RP to form the multicast distribution tree.
D. An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).
E. An RP is required only in networks running Protocol Independent Mu lticast sparse - dense mode (PIM - SDM).
F. To form the multicast distribution tree, the multicast sources register with and the receivers join the RP.
第3题
A. IGMP snooping and Cisco Group Membership Protocol (CGMP) can be used simultaneously on a switch.
B. IGMP snooping a nd Cisco Group Membership Protocol (CGMP) were developed to help Layer 3 switches make intelligent forwarding decisions on their own.
C. IGMP snooping examines IGMP join/leave messages so that multicast traffic is forwarded only to hosts that sent an IG MP message toward the router.
D. IGMP snooping is an IP multicast constraining mechanism for Layer 2 switches.
E. IGMP snooping is enabled with the ip multicast - routing global configuration command.
第4题
A. The multicast sources must register with the RP to form the multicast distribution tree
B. An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM)
C. The multicast receivers must register with the RP to form the multicast distribution tree
D. An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM)
E. An RP is required only in networks running Pro tocol Independent Multicast sparse - dense mode (PIM - SDM)
F. To form the multicast distribution tree, the multicast sources register with and the receivers join the RP
第5题
A. AH provides data integrity.
B. AH is identified by IP protocol 50.
C. AH is identified by IP protocol 51.
D. AH cannot work in conjunction with ESP
第6题
A. There are three IGMP modes: dense mode, sparse mode, and sparse - dense mode
B. IGMP is used to register individual hosts with a multicast group
C. IGMP version 3 enables a multicast receiving host to specify to the router which sources it should forward traffic from
D. IGMP messages a re IP datagrams with a protocol value of 2, destination address of 224.0.0.2, and a TTL value of 1
E. IGMP is a multicast routing protocol that makes packet - forwarding decisions independent of other routing protocols such as EIGRP
F. IGMP snooping ru ns on Layer 3 routers
第7题
A.Multicast addresses 224.0.0.13 and 224.0.0.22 are reserved link - local addresses used by PIMv2 and IGMPv3
B.Because they would map to overlapping IP multicast MAC addresses, multicast addresses 224.0.1.1 and 238.1.1.1 could not be used toget her
C.Multicast addresses 224.0.0.0 through 224.0.0.255 are always forwarded because they are transmitted with Time to Live (TTL) greater than 1
D.Multicast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routers
E.The a dministratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addresses
F.Multicast address 224.0.1.1 has been reserved for the Network Time Protocol (NTP) by the IANA
第8题
35 Which of the following statements is NOT true of the two ferry disasters？
A They traveled during the April-May stormy season.
B They sank on April 21.
C The exact number of deaths could be easily determined．
D They sank somewhere near Dhaka．
第9题
Which of the following statements is NOT true of the two ferry disasters？
A．They were overcrowded
B．They sank on April 21
C．The exact number of deaths could be easily determined
D．They sank somewhere near Dhaka
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