[单选题]Can you take care of Polly when we are away?
A.wait for
B.look after
C.laugh at
D.take to

[单选题]Can you take care of Polly when we are away?
A.wait for
B.look after
C.laugh at
D.take to

[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]What kind of sounds can we make when the vocal cords are vibrating? A.Voiceless
A.Voice
B.
C.Glottal stop
D.Consonant

[单选题]When you come to our city you can see__________ yourself how beautiful it is.
A.in
B.for
C.to
D.with

[单选题]When we read，we construct a mental _______ of the text in our minds，much as we do when we took at an area of land and create a mental map in our heads.
A.representation
B.imagination
C.interpretation
D.identification

[单选题]When we praise the children, "you did a very good job! " you can raise your thumb without saying "good". This suitation means that we can understood the meaning by__________.
A.spoken language
B.body language
C.spelling language
D.written language

[单选题]What can you do to ensure that you will stay healthy?
A.be assured
B.insist
C.prove
D.secure

[单选题]Can you do the task alone,or do you want anyone to assist you?
A.aim
B.help
C.show
D.guide

[不定项选择题]资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are. People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted. People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too. Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them. Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes. When things far away seem indistinct， one is probably______.
A.astigmatic
B.far-sighted
C.suffering from cataracts
D.near-sighted

[单选题]Can you follow the plot so far?
A.change
B.investigate
C.write
D.understand

[单选题]You startled me when you shouted.
A.threatened
B.frightened
C.interrupted
D.troubled

[单选题]Can you give a concrete example to support your idea?
A.specific
B.real
C.special
D.good