题干

小强同学用托盘天平测量一块橡皮的质量,调节天平平衡时,将游码调到0刻线后,发现指针停在分度盘的右侧,如图甲所示,要使天平平衡,应使右端的平衡螺母向____ 移动,天平平衡后,在左盘放橡皮,右盘添加砝码,向右移动游码后,指针停在分度盘中央,所加砝码和游码的位置如图乙所示,则橡皮的质量是____ g,如果调节天平平衡时,忘记将游码调到0刻线,则他测量的橡皮质量比真实值____ 。

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Students in Suzanne Middle School have carried out many interesting surveys online. Here are some of them.

    Shopping online or in physical stores (实体商店)?

    Online shopping is changing how people buy things today. If you need new clothes but don't want to go out, your smartphone or computer is here to help you. However, according to a survey of 15,000 consumers between the age of 13 and 21 in 16 countries, most of them still prefer physical stores.

    Going offline easy or difficult?

    Technology has linked us in ways we never imagined. People spend more and more time on smartphones and computers but pay less attention to their children. Some US parents have felt the need to go offline. However, a recent survey showed that despite their best efforts, most of them couldn't stop using their smartphones and iPads.

Who makes you laugh the most?

     We all need a good laugh to cheer us up now and then. People are looking for different ways to get some fun in everyday life. Many like to watch comedies or read jokes. But a survey of 1,258 US teenagers found that 70 percent of them said it is their friends that make them laugh the most.

     Do you want to be a boss?

     We have read quite a lot of news about teenagers setting up

their own companies. Although most teenagers haven't started to do the same thing, it doesn't mean that they don't want to. According to a survey of 1500 US teenagers from the age of 13 to 18, 79 percent of them said they would like to have their own business.