[单项选择]Finger-prints have often been used as a method of solving criminal case because it ______.


A. is complicated but reliable
B. is simple and not expensive
C. is expensive but easy to do
D. can bring a lot of money

[单项选择]Two main techniques have been used for training elephants, which we may call respectively the tough and the gentle. The former method simply consists of setting an elephant to work and beating him until he does what is expected. Apart from any moral considerations this is a stupid method of training, for it produces a resentful animal who at a later stage may well turn man-killer. The gentle method requires more patience in the early stages, but produces a cheerful, good-tempered elephant who will give many years of loyal service.
The first essential in elephant training is to assign to the animal a single mahout who will be entirely responsible for the job. Elephants like to have one master just as dogs do, and are capable of a considerable degree of personal affection. There are even stories of half-trained elephant calves who have refused to feed and pained to death when by some unavoidable circumstance they have been deprived of their own trainer. Such extreme cases must proba
A. can have unpleasant consequences later
B. is the most effective method available
C. increases the time it takes to train the animal
D. ensures loyal service for years to come

[单项选择]The Chinese have used a method called acupuncture (针灸) to perform operations for about 4 000 years without putting the patient to sleep. This involves placing flexible needles into certain parts of the body. The needles are available in a number of stores in China and anyone may buy them.
To learn how to use the needles takes about one month of training. But to be skillful requires greater time. The person who performs the acupuncture knows how to put in the needles so the needles themselves are not painful. This person also knows where to place the needles so the patient feels no pain in the area where the operation is to be performed. A particular operation might require 25 or more needles placed in various parts of the body. But now this operation requires only 3 or 4 needles.
Today, the Chinese doctors are trying to learn more about acupuncture. They are trying to develop a convincing theory to explain how the needles work in preventing pain, or why a needle in the wrist,
A. The Chinese mainly use acupuncture to cure strange disease.
B. The Chinese are learning to be more skillful and efficient in acupuncture.
C. The Chinese have spread acupuncture all over the world.
D. Most Chinese patients prefer acupuncture to chemicals in curing diseases

[单选题]题目 53
--How often do you have a school trip this term? -- ( ).Since several accidents happened to some schools, all the outdoor activities have been asked to stop.
A. Always
B. Hardly ever
C. Sometimes
D. Often

[填空题]ARVs haven’t been used widely to prevent HIV transmission or infection for lack of money.

[单项选择]I have been trying to quit smoking.
A. give up
B. pick up
C. build up
D. take up

[单项选择]The plant products have been carefully inspected and are considered to be ( ) from any quarantine pests.
A. out
B. away
C. free
D. far

[单项选择]Americans have been criticized for placing too much （　） on being on time.
A. emphasis
B. activity
C. bother
D. assistance

[单项选择]Major manufacturers have been using "quality circle" with undeniable success for more them two decades.
A. 100 years
B. 20 years
C. 50 years
D. 10 years

[单项选择]The selection says that spiders have been discovered ______.
A. five miles above earth
B. more than 2000 feet underground
C. everywhere that man has reached
D. both A and B

[单项选择]What actions have been take by the government