2. 职称英语
  3. The first tiling a dog is taught is to【S1】______It should not【S2】______too l

The first tiling a dog is taught is to【S1】______It should not【S2】______too l

游客2023-07-26  45
问题     The first tiling a dog is taught is to【S1】______It should not【S2】______too long for him to learn commands.【S3】______orders, such as "sit, lie down, stay there, come here," can even be taught by a child. Dogs can also learn to bark at【S4】______and even to attack them. Many people have dogs to【S5】______undesirable people off their property. Training a dog to be a watchdog often produces unexpected results. Some dogs quickly learn the difference between unwanted people and friends. This is because their masters welcome friends and【S6】______them into their houses.
    After a clog learns to carry an【S7】______, he can learn to bring something back from a distance. A stick can be thrown, far away, and the dog enjoys running, after it, and searching for it until he finds it. After a lot of【S8】______, the dog can retrieve a stick,【S9】______other object, even when he has not seen it thrown. To teach a dog this skill, the master makes a simple trail by walking some distance in a straight line, then he leaves the stick at the end of the【S10】______

A object             B keep             C obey             D invite
E let                F take             G strangers        H practice
I simple             J orders           K friends          L or
M refuse             N trail            O advice [br] 【S6】
选项
答案 D
解析 欢迎朋友的到来，自然会邀请他们进屋，故D项为最佳答案。
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