bài 1 ; Khi chiếu một tia sáng tới gương theo phương thẳng đứng chiều từ trên xuống dưới ta thu được tia phản xạ có phương ngang chieuf từ trái sang phải .hãy xác định vị trí đặt gương và tính số đo góc phản xạ .
bài 2 ;Một người cao 1,65m đứng trên bờ cao soi mk xuống mặt nước biết mặt nước cách bờ 40cm . hãy tính khoảng cách từ ảnh của đỉnh đầu đến bờ ao (tại vị trí đứng )
GIÚP MK NHA
điền giới từ vào chỗ chấm
1/Tran Quocs Pagoda is__________at the southeatern shore of Wét Lake.
2/The Temple of Literature was__________in 1070.
3/Khue Van Pavilion was chosen as the___________of Hanoi.
4/ThongNhat ___________is a land mark in HCMCity.
5/HLB was recognised BY unesco AS A WORLD_______site
6/The Imperial academy was regarded as the______university inVN.
7/The one pillar___________was built in1049.
8/CVA was_____________in 1292 in van thon village.
-
6/
WRITE THE SECOND SENTENCES SO THAT IT HAS THE SAME MEANING TO THE FIRST ONE.
1/Thousands of people visit the Temple of Literature everyday.
->The Temple of Literature________________________________
2/In1484,King Le Thanh Tong ordered th construction of 116 steles.
->The construction_________________________________________
3/Do you want to visit HCMMausoleum first?
->Would you_________________________________________________
4/You should take warm clothes because it's very cold in Sa Pa.
->You had_________________________________________________
5/It's not necessary to book a hotel in advance.
->You don't_________________________________________________
6/It's a good idea to rent a bike or motorbike to travel around the city.
->You____________________________________________________
7/Let's pay a visit to Huong Pagoda.
->Why don't__________________________________________
8/Khue van Pavilion was chose as the offcial symbol for Vietnam's capital Hanoi.
->They____________________________________________