多多训练才能取得好成绩哦！
1、The country was facing difficulties financially and ____the situation was discouraging.
A.comprehensive
B.successive
C.overallz
D.systematic
2、I can’t advise you what to do. You must use your own____.
A.opinion
B.justice
C.ideal
D.judgement
3、Sometimes they____ their students’ poor comprehension to a lack of intelligence.
A.owe
B.attribute
C.contribute
D.gratitude
4、Gold is a precious, yellow coloured ____used for making coins, ornaments and jewelry.
A.mental
B.metal
C.moral
D.mould
5、If you persist in doing that, none except yourself should____the consequences.
A.answer for
B.answer to
C.be responsible of
D.be responsible about
6、He saved his daughter from the fire____ of his own life.
A.at expense
B.at a price
C.at the cost
D.At the loss
7、The misty weather in London____the contact.
A.interfered with
B.interfered
C.insured with
D.insured
8、Many automobile accidents were____careless driving.
A.attributed to
B.resulted in
C.contributed to
D.raised from
9、His answer was so confused that I could hardly make any____of it all.
A.explanation
B.meaning
C.sense
D.interpretation
10、Because I don’t take any sugar in my tea, I____to forget to offer it to other people.
A.like
B.come
C.tend
D have
11、Revolutionary developments in both observational and theoretical astronomy in the 1960’s.
A.commenced
B.occurred
C.were disputed
D.were exchanged
12、In the legends of the American West, Paul Bunyan’s most possession was Babe the Blue Us, whose horns were said to span a distance of 42 ax handles.
A.comical
B.valued
C.expensive
D.colorful
13、A supernova is a star that explodes and then slowly fades to less than its original ．
A.size
B.weight
C.radiance
D.imortance
14、Over six million citizens of the United States collect benefits from pension plans each year.
A.unauthorized
B.confidential
C.nontransferable
D.nongovernmental
15、Since the 1950’s literary critics have attempted to answer the question: When did children’s literature first emerge as a distinct literary genre?
A.improve as
B.appear as
C.conform to
D.respond to
16、Granite crystals are large enough to be seen with the eye.
A.wary
B.candid
C.unaided
D.discerning
17、Having in the Marine Corps in August 1918, Opha May Jonnson was made a provisional sergeant a month later.
A.considered
B.joined
C.written to
D.Risen in
18、The use of Xrays for diagnostic purposes poses the risk of overexposure to radiation. A.medical
B.spacious
C.experimental
D.General
19、The geysers, one of the most unusual phenomena in nature, is beautiful to .
A.view
B Relate
C.Sketch
D.Withhold
20、The lymphatic system includes a network of tiny capillaries that lie to the fine blood vessels.
A.independent of
B.obscured by
C.near
D.within
21、第一篇 Sleep Sleep is part of your daily activity cycle, but there are several different types or stages of sleep and they too occur in cycles. If you are an average sl eeper, your sleep cycle will go something like this: When you first drift off into sleep your eyes will roll about a bit, your te mperature will drop slightly, your muscles will relax, and your breathing will s low and b***me quite regular. Your brain waves slow down a bit too. This is cal led Stage 1 sleep. For the next half hour or so, as you relax more and more, you will drift dow n through Stage 2 and Stage 3 sleep. The lower your stage of sleep, the slower y our brain waves will be. Then, about 40-60 minutes after you lose consciousness, you will have reache d the deepest sleep of all. Your brain waves will show the delta rhythm. This I s Stage 4 sleep. You may think that you stay at this deep fourth stage all the rest of the ni ght, but that turns out not to be the case. Instead, about 80 minutes after you fall into sleep your activity cycle will increase slightly. The delta rhythm w ill disappear, to be replaced by the activity pattern of brain waves. Your eyes will begin to move around under your closed eyelids as if you were looking at s omething occurring in front of you. This period of Rapid Eye Movements lasts for some 8-15 minutes and is called REM sleep. During both light and deep sleep, the muscles in your body are relaxed but c apable of movement. However, as you slip into REM sleep, a very odd thing occurs ? Most of the voluntary muscles in your body b***me paralyzed. Although your b rain shows very rapid bursts of neural activity during REM sleep, your body is I ncapable of moving.
The lower the stage of sleep,____
A.the greater the alpha waves will be.
B.the slower the brain waves will appear.
C.activity pattern of the brain.
D.the closer one is to the initial Stage 1 sleep .
22、(同21题)Before one reaches the deepest sleep,_____ A.muscular inhibition occurs .
B.one’s body muscles b***me paralyzed.
C.loss of consciousness has already occurred.
D.one’s eyes begin to move as if looking at something.
23、(同21题)REM sleep is characterized by____
A.a drop in temperature.
B.a loss of consciousness.
C.a lack of body movement.
D.the appearance of data waves.
24、(同21题)Muscular relaxation, a temperature drop, and breath regularity are characteristics of____
A.REM sleep.
B.Stage 1 sleep.
C.delta rhythms.
D.Stage 2 and 3 sleep.
25、(同21题)An increase in the activity cycle indicates____
A.one is waking up.
B.a relaxing of body muscles.
C.an increase in the body’s rhythms.
D.the disappearance of delta rhythm.
