Làm và giải thích hộ mình câu 8,10,11 và câu 13 với ạ

Scientists have known a lot about the earth. They understand how mountains are made and what a volcano is. The following example is about volcanic eruptions. Mt. Vesuvius in Italy and Mt. St. Helens in the USA are both famous mountains. They are both volcanoes. A volcano is a mountain that is open at the top. Smoke and hot air come out of the hole. Sometimes very hot rock also comes out of the mountain. That can make trouble for people nearby. This is what happened with Mt. Vesuvius and Mt. St. Helens. Hot rock poured out of Mt. Vesuvius and covered the town of Pompeii in 79 AD. Everyone in the town was killed. The Mt. St. Helens volcano didn‟t kill many people. a. A volcano is a mountain that has a hole at the top. b. Mt. Vesuvius and the Mt. St. Helens are both famous volcanoes in Italy. c. Smoke, hot rock and hot air can make trouble for all people in USA and Italy d. The people were killed by the eruption of Mt. Helens less than those by the eruption of Mt Vesuvius. e. The town of Pompeii was developed by the eruption of Mt. Vesuvius in 79 AD. Questions 1. What is a volcano? …………………………………………… 2. Are the Mt. Vesuvius and the Mt. St. Helens both famous volcanoes in Italy? ……………………………………………………………. 3. What happened to the people in the town of Pompeii in 79 AD? ……………………………………………………………… 4. Did the Mt. St. Helens volcano kill everyone? ……………………………………………………………..

Một xe máy đi từ B về A với vận tốc 40km/h sau đó 24 phút một ô tô đi từ B về A với vận tốc 50km/h.hỏi hai xe gặp nhau sau bao lâu kể từ lúc xe máy khởi hành ? Vị trí gặp nhau cách B bao nhiêu km ? Biết quãng đường AB dài 376 km

1. I ( do) my homework while Nick (watch)……….. TV last night. 2. Unless they (pass) ……….. their examinations, they would join the army. 3. We(study)………..English for two years . 4. They (stay)…………..…..in Ha Noi for a few days next week.

Bài 1 đặt tính rồi tính 42546 : 37 38400 : 75 567400 :600 634720 : 120

18. The committee_____ already reached a decision. A. have B. has C. having D. to have 19. A pair of jeans_____ in the washing machine this morning. A. is B. are C. was D. were

Sóng là gì? Nguyên nhân sinh ra Sóng? Thủy Triều là gì? Nguyên nhân sinh ra Thủy Triều?

Mình còn ít điểm nhưng mong các bạn làm giúp

Cho tam giác ABC có A=60° B=45° thì cạnh lớn nhất của tam giác ABC là: A.AB<AC B.BC<AC C.AC<BC<AB D.BC<AC<AB

Giúp mình với nha, mình chỉ còn mỗi 20 điểm thôi,so ry