题目内容
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A．It must be trained so it won't bite.
B．It needs more love and care.
C．It demands more food and space.
D．It must be looked after carefully.
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更多“A．It must be trained so it won…”相关的问题
A．It must be trained so it won't bite.
B．It demands more food and space.
C．It costs more money to keep.
D．It needs more love and care from the master.
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B．Invention is a new idea to modern people.
C．The ability to bring trained people together to solve problem shows man is bright.
D．What we need is demands from others to work for a better future.
A.it must rain
B.it must be raining
C.it must have rained
D.it must have been rained
A．It is real
B．It sure is
C．It is certain
D．It must be
A．It is real
B．It sure is
C．It is certain
D．It must be
A.It was designed by modem artists.
B.Its best selection is of modem art paints.
C.Its merchandise must be carefully sorted through.
D.It colors black-and-white prints.
A．It depends on the students' own effort.
B．It relies on the teacher's technique to present speech models.
C．The teacher himself must be a perfect speech model.
D．The teacher must treat it as a matter of primary importance.
听力原文： The dog has often been an unselfish friend to man. It is always grateful to its master. It helps man in many ways. Certain breeds of dogs are used in criminal investigations. They are mined to sniff out drags and bombs. They help police to catch criminals.
The dogs that help in criminal investigations are trained at a school called the Military Dog Studies Branch of the U.S. Air Force in Lackland, Texas. The dogs to be trained are selected by an air force team. This team visits large cities across the country to buy the dogs. They may buy dogs from private citizens for up to $750 each. Some citizens freely give their dogs. The dogs selected must be healthy, brave and aggressive. They must be able to fight back if they are attacked. The dogs chosen are between the ages of one and three. They are given a medical examination when they arrive at the school. Their physical examination includes X-rays and heart tests. The trainee dogs undergo the first stage of training when they arrive in Lackland. This is an 11-week course for patrol duty. After this course, the best dogs are selected to go on another 9-week course. They learn drug-sniffing or bomb-sniffing. After this course, the dogs are ready for their jobs in the cities or on air force bases.
The training given to a drug-sniffing dog is different from that given to a bomb-sniffing dog. A drug-sniffing dog is trained to scratch and dig for the drags when he sniffs them. A bomb-sniffing dog sits down when he finds a bomb. That is the alert for hidden explosives.
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A．Given by the local government.
B．Born by a large number of bitches.
C．Bought from different cities and villages.
D．Captured over grassland.
A．It will be easy to understand.
B．Students will be tested on all the material discussed in class.
C．It will cover topics from a wide variety of academic fields.
D．Students must complete all parts of it.
A．It depends on your position to settle everything in a form.
B．Questions in a form. are more important than your position.
C．You have little right to determine the conditions you like most.
D．You must change a preprinted application before it is discussed.
