Cho 3 điểm A, B, C không thẳng hàng. Hãy vẽ đường thẳng m sao cho không đi qua A, B, C và:

b) Cắt hai đoạn thẳng AB và AC và không cắt đường thẳng BC

Complete the passage by filling each blank with the correct form of the word in brackets.

    Some people ask me if I like living in my hometown. The answer is certainly ‘yes’. The simple reason is that it has lots of interesting places. If you want to widen your knowledge of the past, you can go to the museum. It's a historical building, with a big collection of (17. value)________ artefacts. There is also a craft village in my hometown. There, the (18. village)________ make    drums. Their drums are not only famous in the locality but also (19. nation)_________.       You can visit the old workshop, where drums are still made in the (20. tradition)_________ way. Some of them are huge! Another attraction in my hometown is the local library. It's an educational place where anyone can borrow books and take them home to read. Besides, it also has a (21. read)________ club. I'm one of its members, and we gather once a week to discuss what we've read together. My hometown is also a cultural centre, with many traditional festivals and (22. act)________. I love it very much.

Question 18:

Tìm  lim x → − ∞ 2 x − 1 x + 2

A. 1

B.  - 1 2

C. 2

D.  - ∞

Giải các hệ phương trình sau và minh họa bằng hình học kết quả tìm được: