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【单选题】

Passage 2
Beads were probably the first durable ornaments humans possessed, and the intimate relationship they had with their owners is reflected in the fact that beads are among the most common items found in ancient archaeological sites. In the past, as today, men, women, and children adorned themselves with beads. In some cultures still, certain beads are often worn from birth until death, and then are buried with their owners for the afterlife. Abrasion due to daily wear alters the suce features of beads, and if they are buried for long, the effects of corrosion can further change their appearance. Thus, interest is imparted to the bead both by use and the effects of time.
Besides their wearability, either as jewelry or incorporated into articles of attire, beads possess the desirable characteristics of every collectible. They are durable, portable, available in infinite variety, and often valuable in their original cultural context as well as in today’s market. Pleasing to look at and touch, beads come in shapes, colors, and materials that almost compel one to handle them and to sort them.
Beads are miniature bundles of secrets waiting to be revealed: their history, manufacture, cultural context, economic role, and ornamental use are all points of information one hopes to unravel. Even the most mundane beads may have traveled great distances and been exposed to many human experiences. The bead researcher must gather information from many diverse fields. In addition to having to be a generalist while specializing in what may seem to be a narrow field, the researcher is faced with the problem of primary materials that have little or no documentation. Many ancient beads that are of ethnographic interest have often been separated from their original cultural context.
The special attractions of beads contribute to the uniqueness of bead research. While often regarded as the "small change of civilizations", beads are a part of every culture, and they can often be used to date archaeological sites and to designate the degree of mercantile, technological, and cultural sophistication.
What is the main subject of the passage

A.
Materials used in beads.
B.
How beads are made.
C.
The reasons for studying beads.
D.
Different types of beads.
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参考解析:
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【单选题】Questions 17-20 are based on the following talk in a geography class. You now have 20 seconds to read Questions 17-20. What can be inferred about the region including Maine and Quebec during the...

A.
The area was economically unified.
B.
The authorities were unable to enforce law and order.
C.
The two governments fought for control of the area.
D.
Most of the people living there spoke only French.

【单选题】Questions 17-20 are based on the following talk in a geography class. You now have 20 seconds to read Questions 17-20. What does the speaker say about the road between Maine and Quebec

A.
It was built by the Canadians.
B.
It was built to facilitate trade.
C.
The path for the road was extremely difficult to clear.
D.
Hostilities between Canada and the United States caused construction delays.

【单选题】细辛的功效是()

A.
发汗解表,和中化湿,利水消肿
B.
发表散寒,祛风胜湿,止痛
C.
发汗解表,温中止呕,温肺止咳
D.
祛风散寒,通窍,止痛,温肺化饮
E.
散风解表,通窍止痛,燥湿止带,消肿排脓,止痒

【单选题】Which of the following is NOT the reason why people like malls(). A. They feel safe because malls have police station of private security guards. B. They can be served free meals after doing shopping....

A.
Malls are popular places for Americans to go. Some people spend so much time at malls that they are called "mall rats". Mall rats shop until they drop in the hundreds of stores under one rood.
B.
People like malls for many reasons. They feel safe because malls have police stations of private security guards. Parking is usually free, and the weather inside is always fine. The newest malls have beautiful rest areas with waterfalls and large green trees.
C.
The largest mall in the United States is the Mall of America in Minnesota. It covers 4.2 mil- lion square feet. It has 350 stores, eight night clubs, and a seven-acre park! There are park- ing spaces for 2,750 cars. About 750,000 people shop there every week.
D.
The first indoor mall in the United States was built in 1965 in Edina, Minnesota. People like doing all their shopping in one place. More malls were built around the country. Now, malls are like town centers where people come to do many things, they shop, of course, they also eat in food courts that have food from all over the world. They see movies at theatres. Some people even get their daily exercise by doing the new sport of "mall walking". Others go to malls to meet friends.
E.
In some malls, people can see a doctor or a dentist and even attend church. In other words, people can do just about everything in malls. Now residents can actually live in their favorite shopping center.

【单选题】对于肾衰竭患者可用常用剂量的药物是

A.
肝素
B.
比妥类
C.
青霉素类
D.
地高辛
E.
盐酸哌替啶