[单选题]Can you imagine the difficulty I had __________ language obstacles I first studied abroad?
A.to overcome
B.overcoming
C.overcome
D.overcame

[单选题]Can you imagine the difficulty I had __________ language obstacles I first studied abroad
A.to overcome
B.overcoming
C.overcome
D.overcame

[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]I′m sorry I can′t see you immediately;but if you′d like to take a seat,I′ll?be with?you__________.
A.for a moment
B.in a moment
C.for the moment
D.at the moment

[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

[单选题]—Hello. Blue Sky Company. Can I help you —Hello. This is Jack Smith. May I speak to the sales manager, please —Yes, this is __________.
A.I
B.me
C.she
D.her

[单选题]In this lecture, I can only give you a purely view of how we can live life to the full and make some suggestions about the future.
A.private
B.personal
C.unique
D.different

[单选题]You can mock,but at least I am willing to have a try.
A.smile at
B.look down on
C.belittle
D.laugh at

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

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

[单选题]Can you find out the flaw in their research papers?
A.argument
B.failure
C.feature
D.defect

[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