19．Dogs are very sociable（合群的） animals．When owners go out and leave their dogs alone，the dogs get worried and upset．Dogs should be trained to be their own while still young instead of when they are older and set in their ways．When owners are not around，they should provide some toys for their dogs to play with．Leaving the radio or television turned on might also provide relaxing background noise． Howling（嚎叫） is a form of communication．Dogs do it to tell one another where they are．Some dogs howl when they are lonely，while others do it when greeting strangers whom they are seeing for the first time．Some even howl to music and do this because it is fun． When it comes to training dogs，giving rewards（奖赏） is a far better way than using punishment．Food makes an excellent reward，and if they do not respond（反应） to this，owners should try touching．Dogs like being touched by owners very much．Words of praise work well too，but not as well as food or touch．It helps if owners spend more time with their dogs． 14．When should dogs be trained to be on their own？B A．When they are born． B．When they are young． C．When they are worried． D．When they are older． 15．Why should the owners leave the television turned on when they are not at home？C A．Because they think their dogs like watching TV． B．Because they think watching TV helps to train dogs． C．Because they want to make their dogs feel less worried． D．Because they want their dogs to learn some skill from TV programs． 16．What is the second paragraph of the passage mainly about？C A．Dogs howl to music． B．Dogs howl to tell where they are． C．Dogs howl to communicate． D．Dogs howl to show they are lonely． 17．According to this passage，which of the following isn't a good way to train dogs？A A．Punishing the dogs． B．Spending more time with the dogs． C．Giving rewards to the dogs． D．Giving words of praise to the dogs．
2．It was Saturday．Mike stayed at home alone（单独地）．His parents went to visit his grandparents in another city．He did his homework and read books．After lunch，he watched TV and played basketball on the playground with Jack．He felt very tired．In the evening，his parents came back and brought him some presents．They were a schoolbag and a basketball．Tom felt very excited! 1．Mike didn't visit his grandparents．T 2．Mike did his homework and read books at home．T 3．Mike felt tired after reading books．F 4．Mike's parents bought a new schoolbag and a football for him．F 5．Mike was sad in the evening．
20．Hi!We are Lucy and Lily．We are from South Africa．We are studying in a middle school now．We like the weekends very much because on weekends there（64）are（be） different kinds of outdoor activities （活动），such as going to the park，going shopping，playing ball games and so on． Our family usually（65）have（have） a good time in the park on Saturdays．We often take some bread，meat，water and milk with us． It's Saturday today．We（66）don't go（not go） to school．We are in the park again．Look!What are we doing？Father is fishing in a boat on the lake （湖）．My mother is an English teacher but she（67）can speak （speak） some Chinese．She is talking with some Chinese children now．Lily is a quiet girl．She is writing a letter to her friends．She（68）misses（miss） her friends in South Africa very much and she wishes（69）to see（see） them again．What about me？I like reading．I（70）am sitting（sit） and reading under the tree． Do you think we are happy？
12．根据下面对话中的情境，在每个空白处填入一个适当的语句，使对话恢复完整． A：How was your weekend？ B：（81）It was great．I really enjoyed it． A：Oh，did you go anywhere？ B：Yes．I went to a farm with my classmates． A：（82）Why did you go there？． B：Because we are doing an Experimental Education Project this year． A：Experi mental Education Project？（83）What's that？ B：It's a projec t for students to learn by practice．Students can learn something outdoors． A：That's interesting and meaningful．（84）What did you learn？ B：We learned to feed animals and plant vegetables． A：Sounds great!（85）I hope I will do the project too． B：You probably will．I hear all the schools will do the project．
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