问题 选择题

一个学生调节天平,使横梁平衡后,发现游码恰好在标尺中央,游码标尺的最大刻度为1g,他用这个天平测量一物体的质量,把物体放在左盘,右盘放27g砝码,又把游码拨到最左端,天平平衡,则被测物体的质量是(  )

A.26.5g

B.27.5g

C.26g

D.28g

答案

该游码标尺的最大刻度为1g,游码恰好在标尺中央,则游码对应的刻度值是0.5g.

故物体的质量=砝码的质量+游码对应的刻度值=27g+0.5g=27.5g.

故选B.

写作题

书面表达。

     Emily将她的烦恼写在了博客上并征求大家的建议。请了解她的烦恼并写出你(Chen Lin-from

Dongying)的建议,要求字数在100词左右,建议的开头和结尾已经给出,不计入总字数。

    建议应包括:

  (1)孩子应尊重父母

  (2)父母经验丰富

  (3)父母的要求是对你的成长有好处的

  (4)……

  (5)多同父母交流沟通。 

    Possible new words: respect v & n. 尊重;  responsible adj. 有责任感的;  demand v. & n. 要求

    Here are Emily's problems on the Blog:

    My problem is my parents. They never stop going on about (唠叨) how I should keep my room clean, keep

my hair tidy and wear smart clothes. They even make me do the washing-up after dinner every night! None of

my friends have got such terrible parents. What should I do?

Emily, USA

    Hi, Emily. I think it's lucky for you to have such good parents.                                                                   

                                                                                                                                                                

                                                                                                                                                               

Chen Lin, Dongying 

单项选择题