Ánh sáng đi qua nước tạo ra đường gì ?giải thích giúp em

Cho tam giác ABc ;qua d là trung điểm của cạnh AB kẻ DE//BC (E thuộc AC).CMr EA=EC

Các biện pháp phòng. Bệnh giun sán
Trả lời đầy đủ giúp em với ạ

Hai đường thẳng xx’, yy’ cắt nhau và trong các góc tạo thành có một góc bằng 90 độ thì

Hai đường thẳng xx’, yy’ cắt nhau và trong các góc tạo thành có một góc bằng 90 độ thì

Il. Read the passage carefuy and choose the item that best answer each of the questions
about it (1,5pts) . “
Collecting things is an interesting hobby. People collect a lot of things such as stamps, milk
bottle labels, comic books as well as car toys. Someone who has much money can collect sport cars
'Linh is a skillful and interesting woman. She is twenty years old. She is working as a hairdresser. Linh has a strange hobby that is collecting candy shells. Her friends and relatives always give her shells after eating candy. She has a big collection of candy shell now. She thinks
she will make a special dress. If she has more shells, she will make other things such as wallets or shoes. This makes her happy.
1,what is ling's hobby
A. collecting glasses
B.carving candy shells
c.collecting special dresses
D, collecting eggshells

People/plant/trees/public area
Mong anh chị giải giúp em với ạ!