XI. Arrange the following words and phrases into the correct sentence.

1) can't/the piano/Hoa/sister/play/and/and/her/either/can't.
=> Hoa can't play the piano and her sister can't, either.

2) watching/prefers/to/brother/books/TV/my/reading.
=> My brother prefers watching to reading books.

3) in/how/pen/America/do/write/to/you/your/often/pal.
=> How often do you write to your pen pal in America?

4) the/I/card/post/buy/going/phone/office/am/to/to/a.
=> I am going to buy a phone card to the post office.

5) once/public/my/I/from/phone/office/week/parents/a.
I phone my parents from a public office once a week

Cấu tạo dây điện gồm lõi và vỏ bọc, lõi được làm bằng đồng để dẫn dòng điện, còn vỏ bọc được làm bằng nhựa để cách điện

\(\left(-\dfrac{3}{5}x^3y^2z\right)^3=\left(-\dfrac{3}{5}\right)^3.\left(x^3\right)^3.\left(y^2\right)^3.z^3=-\dfrac{27}{125}x^9y^6z^3\)
Bậc của đơn thức: 18
Hệ số: \(\dfrac{-27}{125}\)