题干

在“用天平和量筒测定固体的密度”实验中,将一矿石标本放在已调好的天平左盘内,当天平重新平衡时右盘内的砝码和游码在标尺上的位置如图甲所示,则矿石的质量为____g,将矿石标本放入装有水的量筒中,量筒中水面位置的变化情况如图乙所示,则矿石的体积为____cm3.这种矿石的密度为____kg/m3

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64,20,3.2×103

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    A peer is a person who is about the same age as you. Peers affect your life, whether you know it or not, just by spending time with you.

    ____ Maybe another student in your science class taught you an easy way to remember the planets in solar system. Maybe you got others excited about your new favorite book and now everyone's reading it. However, sometimes peers affect one another in another way____ Maybe a kid in the neighborhood wanted you to steal with him.

    Some kids give in to peer pressure because they want to be liked, to fit in, or because they worry that other kids may make fun of them if they don't go along with the group.____ The idea that “everyone's doing it” may influence some kids to leave their better judgments or their common senses behind.

    Peer pressure can be extremely strong and hard to get rid of. Experiments have shown how peer pressure can influence someone to change her/his mind from what she/he knows for sure is a correct answer to the incorrect answer-just because everyone else gives the incorrect answer!____

    ____ Paying attention to your own feelings and beliefs about what is right and wrong can help you know the right thing to do. Inner strength and self-confidence can help you stand firm, walk away and resist doing something when you know better.

A. Peers can have a good effect on one another.

B. Peer pressure is the direct influence on people by peers.

C. Good peers may give you a hand when you are in trouble.

D. That holds true for people of any age in peer pressure situations.

E. Maybe one kid in school tried to get another to cut class with him.

F. It can be hard to walk away from peer pressure, but it can be done.

G. Others may go along because they are curious to try something new that others are doing.