Question

　　Before you use your new microwave oven, read the instructions carefully．Each oven has its own control panel(控制板)，but most microwave ovens operate in a similar way．Look at the control panel shown here．It shows the time at the top of the panel．Under the time are the different functions(功能)．You can press(按)Defrost, Cook, Clock, or Power．You can also warm food by pressing Reheat Times．

　　Under the functions are the numbers．These numbers are shown as on telephone, from zero through nine．You can press the numbers to set the cooking time in seconds or minutes．Under the numbers are Start and Clear．

　　A microwave oven will automatically(自動的)cook on HIGH(power level 10)unless you enter a lower power level．Suppose(假設)you want to cook a serving of broccoli for two minutes and forty-five seconds on MEDIUM power(level 5)．First, press the numbers 2, 4 and 5(two minutes, forty-five seconds)．Then press Power．Next, press the number 5．At last, press Start to begin cooking．If you make a mistake, press Clear．This will clear the display and allow you to start over again．(from www.zkenglish.com)

閱讀短文，然后根據(jù)其內容回答下列問題。

1．What is the main idea of the passage?

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2．What functions does a microwave oven have?

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3．How would you cook green beans for two minutes and thirty seconds at power level 7?

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4．What is the last function you press each time you set the controls?

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5．What does “Clear” allow you to do when you press it?

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Answer 1

答案：
解析：

1．It tells us how to use a new microwave oven。由文首的“Before you use your new microwave oven, read the instructions carefully”，可以得到本文的主旨是“講述微波爐的使用方法”。 　　2．Defrost, cook or warm food。短文末句的“Under the time are the different functions(功能)．You can press(按)Defrost, Cook, Clock, or Power．You can also warm food by pressing Reheat Times．”這句話是答案的出處。 　　3．First, press the number 2, 3, and 0．Then press Power．Next press the number 7．Finally press Start to begin cooking．由短文中的“Suppose(假設)you want to cook a serving of broccoli for two minutes and forty-five seconds on MEDIUM power(level 5)．First, press the numbers 2, 4 and 5(two minutes, forty-five seconds)．Then press Power．Next, press the number 5．”可以知道若是需要兩分鐘四十秒的時間來做菜的話，則是這樣來操作。由此可知要是做豆角的話，需要用時兩分鐘三十秒，則應按2，3，0這三個鈕。再根據(jù)前面的說明，可不難找到答案。 　　4．Start．由“Under the numbers are and Clear．”和“At last, press Start to begin cooking．”可知這是答案的出處。 　　5．It will clear the display and allow you to start over again．這是文章最后講的一層意思，答案即在“If you make a mistake, press Clear．This will clear the display and allow you to start over again．”一句中。 　　這篇科學說明文淺顯的文字，介紹了微波爐的構造并詳細講述了它的操作使用方法。