练习册

  • 练习册
  • 试题
    (学生自读对话.划出有关约会的问答句.) T:Read the dialog.then find out the sentences about making appointments. (老师可适当选择关键句来板书.) Example: Will you two go to see it? Yes.we will be free tomorrow. Step 2 Presentation 第二步 呈现 【查看更多】

     

    题目列表(包括答案和解析)

    （6分）食品保鲜的措施有添加防腐剂、充填气体、放置干燥剂和脱氧剂等。
    （1）丙酸钠是一种常用的防腐剂，其化学式为C3H5O2Na。它由     种元素组成，碳元素和氧元素的质量比为    。
    （2）生石灰是常用的干燥剂。请用化学方程式表示其作干燥剂的原因      。
    （3）铁粉也可用作保鲜剂，它利用了铁生锈的原理，所以又称“双吸剂”。这里的“双吸”是吸收空气中的         。有一袋铁粉使用了一段时间，表面已经生锈，经验证它还可以继续使用，其验证方法是加入过量的稀盐酸，写出有关反应的化学方程式       、        。

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    划出划线部分的错误之处。

    　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　[    　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　]

    His(A) bag is heavyer(B) than(C) mine(D)

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    写作训练

    阅读下面的卡片，写出有关自己的所有信息, 也可以写出喜欢的原因。

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    读对话，判断正误。正确的写(T)，错误的写(F)。

    　　Rick：Wow!Bill!This music store is really big!

    　　Bill：Yeah, it is．Well, I want to go to the pop section．Yu Quan(羽泉)has a new CD and I want to buy it．

    　　Rick：Oh．Is that your favorite pop group?

    　　Bill：Yes．They are really cool．So, what's your favorite kind of music, Rick?

    　　Rick：I also like pop and my favorite group is F4, they are fantastic!

    　　Bill：What about classical music?Do you like classical music?

    　　Rick：I love classical．Do you know Yo-Yo Ma?He is my favorite musician．He is amazing．

    　　Bill：Sorry, I really don't like classical, but I think Yo-Yo Ma is great．So, where are the classical CDs?

    　　Rick：Follow these directions, go upstairs and turn left．They are behind dance music．

    　　Bill：What about pop CDs?

    　　Rick：They are on the first floor．

    　　Bill：Ok, see you later．

    (1)

    Bill's favorite music is dance．

    (　　)

    (2)

    Bill's favorite group is Yu Quan．

    (　　)

    (3)

    Rick's favorite music is classical．

    (　　)

    (4)

    The classical CDs are on the first floor．

    (　　)

    (5)

    Rick likes classical music but he doesn't like pop．

    (　　)

    (6)

    Bill wants to buy a new CD of F4．

    (　　)

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