[单选题]In other words, each connection creates a （72） witha length that may be totally different from another path created by another connection. This means that TCP cannot use the same retransmission time for all connections.
A.path
B.window
C.response
D.process

[单选题]Can you hear This? 　　When something creates a sound wave in a room or an auditorium, listeners hear the sound wave directly from the source. They also hear the reflections as the sound bounces off the walls, floor, and ceiling. These are called the reflected wave or reverberant(反射的)sound, which can be heard even after the sound is no longer coming from the source. 　　The reverberation time of an auditorium is determined by the volume or interior size of the auditorium. It is also determined by how well or how poorly the walls, ceiling, floor, and contents of the room (including the people) absorb sound. There is no ideal reverberation time. Because each use of an auditorium calls for different reverberation. Speech needs to be understood clearly: therefore rooms used for talking must have a short reverberation time. The full-sound performance of music such as Wagner operas or Mahler symphonies should have a long reverberation time. The light, rapid musical passages of Bach or Mozart need a reverberation time somewhere between. 　　Acoustic problems often are caused by poor auditorium design. Smooth, curved reflecting surfaces create large reflections. Parallel(平行的)walls reflect sound back and forth, creating a rapid, repetitive pulsing effect. Large pillars(柱)and corners can cause acoustic shadows as the sound waves try to pass around the object. Some of these problems can be solved by using absorbers and reflectors to change the reverberation time of a room. For example, hanging large reflectors, called clouds, over the performers will allow some sound frequencies to reflect and others to pass to achieve a pleasing mixture of sound. 文章(41~45) This passage is mainly about_____
A.sound waves and their effects.
B.the types of music orchestras play.
C.walls of an auditorium.
D.the design of an auditorium.

[单选题]When a teacher creates a real life situation for his students to discuss, he expects them notto focus on__________ too much.
A.form
B.use
C.meaning
D.function

[单选题]The （ ）creates opportunities for more direct integration of the hysical world into omputer-based systems, resulting in efficiency improvements, economic benefits, and reduced human exertions（ ）创造了将物理世界更直接地整合到基于计算机的系统中的机会，从而提高了效率、经济效益，并减少了人类的劳动。 A.internet of things物联网
A.clou
B.computing云计算
C.big data大数据
D.mobile internet移动互联网

[单选题]The(）creates?opportunities?for?more?direct?Integration?of the?physical?world?into?computer-based?systems,resulting?in?efficiently?improvements,economic?benefits,and?reduced human?exertions.
A.internet of things
B.cloud computing
C.big datA
D.mobile internet

[单选题]The connection between two networks to from an internet is handled by a machine known as a （ ）.
A.bridge
B.server
C.router
D.switch

[单选题]Even for one single connection, the retransmission time should not be fixed.A connection may be able to send segments and receive （74）faster during nontraffic period than during congested periods. TCP uses the dynamic retransmission time,a transmission time is different for each connection and which may be changed during the same connection.
A.connections
B.requests
C.acknowledgments
D.datagrams

[单选题]His words activated my spirit.
A.curbed
B.dampened
C.confused
D.stimulated

[单选题]The phenomenon that words having different meanings have the same form is called__________．
A.hyponymy
B.synonymy
C.polysemy
D.homonymy

[单选题]Which of the following underlined words will be stressed when Julia responds to the person who hasmistaken her for Julian? A. My name is Julia, not Julian.
B． My name is Julia, not Julian.
A.

B.My name is Julia, not Julian.
C.

D.My name is Julia, not Julian

[单选题]Which of the following words’pronunciation shows deletion? A.design
A.signature
B.paradigmati
C.
D.designation

[单选题]Which of the following words is entirely arbitrary?
A.tree
B.typewriter
C.crash
D.bang

[单选题]Which of the following words' pronunciation is exceptional to the assimilation rule?
A.unbeatable
B.impossible
C.illegal
D.irregular

[单选题]Which of the following words does not contain a fricative?
A.five
B.change
C.show
D.three

[单选题]Which of the following words does NOT represent a "P" of three-P model
A.Presentation.
B.Practice.
C.Pre-reading.
D.Production.