Question

Dogs wag(摇摆) their tails in different directions depending on whether they are excited and wanting to move forward or threatened and thinking of moving back, a study has found.
Researchers in Italy examined the tail wagging behaviour of 30 dogs, catching their responses to a range of stimuli(刺激物) with video cameras. To conduct the study they chose 15 male dogs and 15 female ones aged between one and six years. The dogs were all family pets whose owners had allowed them to take part in the experiment at Bari University. The dogs were placed in a large wooden box with an opening at the front to allow for them to view various stimuli. They were tested one at a time.
The researchers led by Professor Giorgio Vallortigara of the University of Trieste found that when the dogs were shown their owners—a positive experience—their tails wagged energetically to the right side. When they were shown an unfamiliar human they wagged to the right, but with somewhat less enthusiasm. The appearance of a cat again caused a right-hand side wag, although with less intensity again. The appearance of a large unfamiliar dog, similar to a German shepherd, changed the direction of tail wagging to the left. Researchers supposed the dog was thinking of moving back. When the dogs were not shown any stimuli they tended to wag their tails to the left, suggesting they preferred company. While the changes in the tail wagging were not easily noticed without the aid of video, it was thought that the findings could help people judge the mood (心情) of dogs. Computer and video systems, for example, could be used by professional dog trainers to determine the mood of dogs that they were required to approach.
【小题1】The video cameras were used to catch the dogs ’responses because     .

A．it was easier to catch the dogs’ response changes in the tail wagging

B．the dogs were put in the wooden boxes and tested one at a time.

C．they enabled the dogs’ owners to know about their dogs’ habit

D．the dogs wagged their tails in different directions when they were in different moods

【小题2】The underlined word“intensity” in the passage means         .

A．surprise

B．worry

C．excitement

D．interest

【小题3】When there are no stimuli, a dog will            .

A．wag to the left	B．wag to the right
C．not wag at all	D．wag to the left and then to the right

【小题4】The underlined word “they”in the last paragraph refers to             .

A．the dogs

B．the trainers

C．the systems

D．the researchers

【小题5】The purpose of doing the experiment is           .

A．to train dogs for their owners

B．to help people judge the mood of dogs

C．to help dogs find company

D．to help people choose their pet dogs

Answer 1

【小题1】A
【小题2】C
【小题3】A
【小题4】B
【小题5】B

解析试题分析：
【小题1】A 细节题。根据第二段第2句catching their responses to a range of stimuli(刺激物) with video cameras.说明A正确。
【小题2】c 推理题。根据When they were shown an unfamiliar human they wagged to the right, but with somewhat less enthusiasm. The appearance of a cat again caused a right-hand side wag, although with less intensity again.说明这里的intensity与上一行的enthusiasm是近义词，故C正确。
【小题3】A 细节题。根据最后一段倒数第五行When the dogs were not shown any stimuli they tended to wag their tails to the left说明A正确。
【小题4】B 推理题。根据Computer and video systems, for example, could be used by professional dog trainers to determine the mood of dogs that they were required to approach.说明这里的they就是指dogs，是这些狗被要求去靠近的，故B正确。
【小题5】B 细节题。根据文章最后一段it was thought that the findings could help people judge the mood (心情) of dogs.说明这个实验可以帮助人们判断狗的心情。故B正确。
考点：考查科普类短文阅读
点评：文章介绍了一个实验，记录狗遇见不同的刺激时尾巴摆动的方向，以此来推测狗的情绪。集中考查了细节题，在阅读的时候，要在文章把重要的地方做好标志，以减少做题时的回读的次数，提高阅读的效率。