When you compare the differences between half-duplex and full-duplex Ethernet, which of th

A. Half-duplex Ethernet operates in a shared collision domain.

B. Half-duplex Ethernet operates in an exclusive broadcast domain.

C. Half-duplex Ethernet has efficient throughput.

D. Half-duplex Ethernet has lower effective throughput.

E. Half-duplex Ethernet operates in an exclusive collision domain.

actually you cannot. The good news,【B1】______, is that while such memories may be currently【B2】______, they are not entirely gone, and could theoretically be【B3】______, according to a new brain research. In the study, biologist Jeffrey Johnson【B4】______16 college participants through an FMRI machine (which【B5】______nervous activity via blood flow)to compare brain patterns【B6】______memory formation and recall. First, he showed the students various common words and had them【B7】______a few tasks: say the word backwards in your head,【B8】______its uses, and picture how an artist would【B9】______it. Then, 20 minutes later, after the students re-entered the FMRI machine, Johnson showed them the list of words and asked them to recall【B10】______they could from before. Finally, he compared brain activity from both【B11】______and what he found will surprise you. Using【B12】______is called "pattern analysis" , its possible to【B13】______a unique pattern of brain activity to every individual thing we do. This means that when a participant says the word "apple" backwards the【B14】______pattern of brain activity is different from when he pictures the fruit.【B15】______interestingly, there is close similarity between the pattern that emerges when we【B16】______an activity and when we later recall it. The stronger our memory, the【B17】______the pattern, but as Johnson found, even at a moment【B18】______we cannot remember anything, our nerve cells still fire in a way that【B19】______the activity of when we formed the memory. This【B20】______that sometime in the future we may be able to retrieve the memories we thought wed lost forever.

【B1】

A．although

B．rather

C．though

D．therefore

a huge？ pale hot-air balloon. Many people think of the bright full moon of autumn or the harvest moon that way—like a huge？ pale hot-air balloon. But can you always trust your eyes？

The harvest moon is the full moon on a day nearest the first day of autumn. Full or nearly full, it rises early in the evening for several nights in a row. It brings farmers well-lit evenings to harvest their crops.

The harvest moon can look huge. But does it really fill more of the sky than an ordinary full moon？

Why does the moon look bigger when it is near the horizon？ Our brains compare the size of the moon with the size of the objects we see on the horizon. We know that the distant mountains？ homes？ or skyscrapers are really very large. And？ since the moon is much farther away than is the distant landscape？ we “see the moon as being larger than it would otherwise look.”

1.To what do we compare the size of the harvest moon？

A.Mountains

B.Buildings

C.Homes

D.All of these

2.The main purpose of the article is to() .

A.inform

B.persuade

C.praise

D.convince

3.The author knew most people find the moon() .

A.mysterious

B.interesting

C.boring

D.so ordinary

4.The moon looks bigger if ().

A.it is autumn

B.it is near the horizon

C.homes are near

D.it is a clear night

5.The autumn moon______.

A.is more beautiful than it really looks

B.is the brightest object in the sky

C.rises slowly at dawn

D.helps farmers see as they harvest their crops

A.compare

B.establish

C.separate

A.being asked to compare

B.asking him to compare

C.asked to compare

D.asked him to compare

A.When

B.Compare

C.While

D.Comparing

______ this with that, and you will see which is better.

A、Compare

B、Compared

C、Comparing

D、To compare

？Look at the statements below and the information about training courses.

？Which course (A, B, C or D) does each statement (1 -7) refer to？

？For each sentence, mark one letter (A, B, C or D) on your Answer Sheet.

？You will need to use some of these letters more than once.

A

This course looks at the administrative functions of a bank's loans department, e. g. dealing with credit applications and keeping records of loan transactions. We will use real application forms of the type that administrative staff in loan departments regularly handle. It will be particularly useful for experienced staff with clay-to-day administrative responsibility for loan portfolios. Although most clients choose to enjoy our beautiful premises, the course can be run at the client company or elsewhere.

B

On this advanced course you will build up a database of a company's cash flow over time and identify and interpret patterns of change. You will analyze the cash flow of a few sample companies and use your analysis to judge their ability to settle their debts. This course will help you perform. an advanced cash flow analysis of your own company.

C

Open to anyone who completed our introductory course on legal contracts in business, this course looks at the legal principles involved when a company takes out a loan, and outlines how to take legal action against a company that defaults on its repayments. You will compare the interests and responsibilities of both parties to a loan contract.

D

This is a course for those new to leasing. It will provide you with a basic understanding of why companies prefer to lease property or machinery, rather than buy. You will learn about both the expenses and tax benefits of leasing and you will study a variety of lease agreements and the laws relating to them.

This course is for people who know nothing about the topic.