题目内容
7．You mustn't take photos here．
分析 这里禁止拍照．
解答 答案：You mustn't take photos here．图片上是禁止拍照的标志，must必须，情态动词后加动词原形，否定式mustn't禁止，here这里，故造句这里禁止拍照．主语you，拍照take photos，故答案是You mustn't take photos here．
点评 must是情态动词，虽然must是表示"必须"的意思，但是用于否定式时，mustn't却表示"不要、不能、禁止"的意思，而不是表示"不必"．
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13．-Have you ever heard of Cao Wenxuan，a writer from Jiangsu？
-Of course．______，he is a good friend of my father's．（ ）
-Of course．______，he is a good friend of my father's．（ ）
| A． | I mean | B． | That is to say | ||
| C． | Above all | D． | Believe it or not |
19．
Do you have a dog，a cat or a bird at home？Do you watch them carefully？
Sientists have found that cats，dogs，（92）birds and even goldfish are left-handed or right-handed．These scientists work in Queen's Belfast University．They said that pets are left-handed or right-handed（93）likepeople．As we all know，it is important for animals to be good at getting food．Some like to get food with their right hands，but some like to get food with the left hands．
That's （94）whythe animals are left-handed or right-handed．
The scientists have （95）discovered that male cats and dogs are almost left-handed，and female cats and dogs are right-handed，because their work in everyday life is different．
People（96）usually think that left-handed people are better at languages； some even think that left-handed people are smarter．When it goes to animals，it makes animals act more quickly．
| like why bird usually discover |
Sientists have found that cats，dogs，（92）birds and even goldfish are left-handed or right-handed．These scientists work in Queen's Belfast University．They said that pets are left-handed or right-handed（93）likepeople．As we all know，it is important for animals to be good at getting food．Some like to get food with their right hands，but some like to get food with the left hands．
That's （94）whythe animals are left-handed or right-handed．
The scientists have （95）discovered that male cats and dogs are almost left-handed，and female cats and dogs are right-handed，because their work in everyday life is different．
People（96）usually think that left-handed people are better at languages； some even think that left-handed people are smarter．When it goes to animals，it makes animals act more quickly．