当与同学发生矛盾时，你如何解决？当遇到挫折时，你如何调节自己的心情？

向0.1mol/L CH₃COOH溶液中加入CH₃COONa晶体或加水稀释时，都会引起（　　）

C

    In this week's Students Around the World ,Kim talks with Lisa Conroy, a college student from the USA，about her expenses(花费)．

(K=Kim；L=Lisa)

K：Thanks for talking with me today, Lisa．____

L：Well．I'm twenty—one，and I'm studying at a university in Chicago.

K：____

L：My expenses for every term are almost$15，000．At the start of each term parents pay the $10,000 tuition(学费)．I also get$2，000 from my college．I have to earn(挣)$3，000 myself．

K：How do you do that?

L：I have a part—time job at a hotel．I work about twenty hours a week，and cam$300．

K：____

L：It helps to pay for my rent(房租)and meals at college．It also pays for things like my phone，books，and clothes．

K：____

L：That's true! My mother advised me to spend my money carefully so I don't have to borrow．I hardly ever go to the movies．My roommates and I usually watch movies online，so it's cheaper．

K：____

L：I don't go to restaurants．I cook with my roommates so it's cheaper to eat．I try to walk or ride my bicycle to college. Oh，and I buy a lot of my clothes at second-hand stores．You can find some very cheap，nice clothes in those stores．