31. B (about one and a half million tourists)

32. C (the capital El Qahira/Cairo)

33.  D 

34. A (the most interesting sight....Giza)

35. D (the average temperature from...not too high)

`31 => B. 1,5` million

- one and a half million: một triệu rưỡi = 1,5 million

`32. =>` C. the capital of Egypt

- Sign: The population of Egypt is about fifty million and the capital El Qahira (Cairo), a busy city of just under nine million people.

`33. =>` D. large area with sand

- most of the country is desert: hần lớn đất nước là sa mạc

`34. =>` A. Pyramid Giza

- Sign: The most interesting sights are the pyramids at Giza.

`35. =>` D. The temperature in October is highest in the year in Egypt.

- Sign: the average temperature from October to March is not too high.