Hình $b,c$ là hình thang cân.

$2.$ Hình đó là hình bình hành.

Chu vi: $(10+4)\times 2=28cm$

Diện tích: $10\times 4=40c{m}^2$

Đáp án: B

Dịch: Nhưng thực ra ý tưởng về một chiếc máy tính đã được phát minh ra từ hai thế kỷ trước bởi một người đàn ông tên Charles Babbage.

16. Have you ever dreamed of (visit) …visitng…………………Mars and its two moons?

17. NASA has said it plans (send) ……to send………………people to Mars in the 2030s.

18. Nick told me that he (not visit) ………hadn't visited……………Italy before his trip last year.

19. In December 2019, she (take) ………took……………a ten-day trip to Europe with her family.

20. Son Doong Cave (find) ………was found……………in 1991 by a local man named Ho Khanh.

21. Do you think you (ever / travel) ………have ever travelled……………to outer space in your lifetime?

22. Janet together with her friends (go) …will go………………on a trip to New Zealand this summer.

23. The tourism industry in Indonesia (expand) ……have expanded………………rapidly over the past few years.

24. People (enjoy) ………was enjoying……………the journey when suddenly the ship (hit) …………hit…………an iceberg.

25. Right after Johnson (watch) ………had watched……………a short video about Phu Quoc Island, he (decide) ………decided……………to go to there.

1.not begin 

2. happen

3. go  

4. dsign

5. still 

6. visit

chúc sinh nhật vui vẻ

GARB : quần áo

%
V
C
2
H
2
=
100
%
−
25
%
=
75
%

30,4 (g)