Dear David,

    How are you? I'm fine. I'm in London, at the International School of English. I'm in Class 3 with eight other students.They're from different countries---Spain, America, and Thailand. Our teacher's name is Henry. He's very nice. He's a very good teacher.

    I'm living with an English family. Mr. and Mrs. Brown have three children. Tom is fourteen, Kate is twelve, and Andrew is seven. They are all very friendly, but it isn't easy to understand them.

    London is very big and interesting. The weather is good---cold but sunny---and the parks are beautiful! Hyde Park, and Green Park are all in the city center.

    English food is OK, but the coffee is very bad!

    Write to me soon.

Love

Paula

在平面直角坐标系中，记抛物线$y=x-x^2$与x轴所围成的平面区域为M，该抛物线与直线$y=kx\left(x>0\right)$所围成的平面区域为A，向区域M内随机抛掷一点P，若点P落在区域A内的概率为$\frac{8}{27}$，则k的值为（    ）

《马关条约》中，有利于列强直接利用中国廉价劳力和原料剥削中国人民的条款是（    ）