题目内容
A．have knownB．knewC．knowD．will know
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A new study of the brain is helping scientists better understand how humans process language. One of the patients is a woman with epilepsy(羊癫风). Doctors are【1】Denise Harris to see if she is a good【2】for an operation that could stop her seizures. They are monitoring her through wire electrodes【3】in her brain.
But【4】she is in the hospital, she is also helping scientists understand【5】the brain works with language. The study【6】a part of the frontal lobe called Broca's area. The electrode implants have shown that the area very quickly【7】three different language functions. Eric Halgren, one of the main investigators, says they found different【8】doing, at different times, different processes all【9】a centimeter. The first function deals with【10】a word. The second deals with understanding the word's meaning within a sentence.【11】the third lets us speak the word.
Ned Sahin, a researcher, says scientists【12】for some time that traditional explanations for how parts of the brain work need to be【13】. One such belief is that there is a【14】of language tasks between two very different parts of the brain. One is Broca's area【15】the front. The other is Wernicke's area【16】back in the brain. The belief is that Broca's area is【17】speaking and that Wernicke's area is responsible for comprehending.【18】the new study shows that Broca's area is【19】both speaking and comprehension. He says this shows how parts of the brain【20】more than one task.
(1)
Read the article below about cost.
Choose the best word to fill each gap, from A, B, C or D.
For each question 19—33, mark one letter (A, B, C or D) on your Answer Sheet.
There is an example at the beginning.
Cost as a Factor in Supply
In a purely competitive market, the supplier of goods and services has no control over the market price, because he produces too little to influence market conditions With no difference between his product and the products (19)…his competitors, he will sell nothing if he charges above the market price and he will sell all if he charges at or below the market price. However, in considering the price, he must take cost of production (20)… There are times when he may be willing to sell below his cost. This might happen when prices tumble for (21)… a short time. However, no business person can (22)…lose money for a prolonged(延长的)period. He must (23)…of his costs in relation to the market price if he is to compete successfully and earn a profit.
Many people have the impression that (24)…production increases, costs per unit decrease. (25)…mass production has made this true in certain industries and at certain levels of production, (26)…logic and practical experience have shown that costs per unit begin to rise beyond a certain level of production. Some economists (27)…this principle as the law of increasing costs.
The reason why (28)…rise as production goes up is complex. However, it is easy to recognize that as production goes up, the need for additional factors of production will also grow, resulting (29)…competitive bidding(出价)in the marketplace for the factors of production. If a producer needs (30)…skilled labour to produce more, and none of this labour is unemployed, the producer will have to get (31)…from other sources. This can be done by (32)…higher wages. Higher bidding would also apply to the other factors of production. We must also recognize that not all labour is equally productive, (33)…not all land is equally fertile(肥沃的)and not all ore is equally rich in the mineral wanted.
(19)
A．as soon asB．thenC．whereasD．while
A．AndB．By contrastC．HoweverD．Then
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