题目

右图为几种生物或生物器官的含水量比较，有关说法不正确的是（    ）    A． 大麦粒和花生种子含量低是因为他们所含亲水性物质较少    B． 代谢旺盛的组织、器官含水量较高    C． 生物含水量因生物种类的不同而有所差别    D． 在不同生物含水量不同与其生存环境有关 答案：A阅读下面短文，根据短文大意和语境选择方框内的单词，并用其正确的形式填入空白处，使补全后的短文意思通顺，语法正确，结构完整。 send     expensive     waste      problem     cool Dear headmaster, I’m a student of Grade 9. I want to tell you something. In our school, many students have mobile phones. They think it’s   1   to have a mobile phone. Yes, the phones let students talk with their parents and friends at any time. But I don’t think it’s good for students to use them at school. Many students spend lots of time in  2   messages by mobile phone, some students even use them to play games in class or cheat (作弊) in the exams. Some students always hope to buy the new or   3   mobile phones and this will   4   their parents’ money. And my father tells me that most mobile phones can cause (引起) many health   5   . Could you do something to stop it? Yours,                                                             Sophia