lấy 10,8g kim loại hóa trị 3 tác dụng Cl dư thu được 53,4g Na .Xác định kim loại trên

Đề bài : Viết một đoạn văn miêu tả cảnh mùa hè trên quê hương em, trong đó có sử dụng một phép ẩn dụ. Lưu ý : Không chép mạng.

Neil Armstrong, who got the foot on the moon, was the first person. -> *mn giúp mình làm relative clause rút gọn với*

Điền số thích hợp vào chỗ trống a. | -5 |........| 3 |........... ———|———|——|———|——— b | 8 | -7 |...........|. -5 ———|———|——|———|———— a+b |...........| 3 | -6 |......... ———|———|——-|———|———— a-b |...........|.........|...........| 4

Cho tam giác ABC nội tiếp đường tròn (O), 1 đường thẳng song song với tiếp tuyến tại A của đường tròn căt AB, AC tại D, E Chứng minh tam giác ABC đồng dạng với AED

Mark letter A, B, C or D on your answer sheet to indicate the meaningful sentence from the cues given. We/be/very/tired/last night/because/we/play/football/all the afternoon/. A:We are very tired last night because we played all the afternoon. B:We were very tired last night because we played all the afternoon. C:We were very tired last night because we were playing all the afternoon. D:We were very tired last night because we play all the afternoon. Mark the letter A, B, C, D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underline word(s) in each of the following questions Later that evening, when I was almost asleep, the sound of a crowd brought me back to full consciousness. A:awake B:aware C:afraid D:tired 31Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. The boy ____________eyes are brown is my friend. A:that B:whose C:whom D:who 32Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions. How can scientists predict earthquakes? Earthquakes are not scattered anywhere but happen in certain areas. They happen in places where pieces of the Earth"s surface meet. For example, earthquakes often occur on the west-coast of North and South America, around the Mediterranean Sea, and along the Pacific coast of Asia. Another way to predict earthquakes is to look for changes in the earth’s surface, like a sudden drop of water level in the ground. Some people say animals can predict earthquakes. Before earthquakes, people have seen chickens sitting in trees, fish jumping out of the water, snakes leaving their holes and other animals acting strangely. After an earthquake happens, people can die from lack of food, water, and medical supplies. The amount of destruction caused by an earthquake depends on where it happens, what time it happens, and how strong it is. It also depends on types of buildings, soil conditions and population. Of the 6000 earthquakes on the earth each year, only about fifteen cause great damage and many deaths. Earthquakes happen in certain areas where _________ . A:the soil conditions are stable B:pieces of the earth’s surface meet C:many buildings ae built D:the population is large

Cho tam giác ABC vuông tại A. Tia phân giác góc B cắt cạnh AC tại điểm M. Kẻ MD⊥BC tại D(D thuộc BC) g)Chứng minh BN vuông góc với AD,BN vuông góc với EC h)Tam giác ABC thỏa mãn điều kiện gì để tam giác NAD là tam giác đều?

cảm nhận 2 khổ đầu bài thơ Đoàn Thuyền Đánh Cá

mn ơi giúp em với em sẽ cho 5 sao và cảm ơn

Làm ho mik câu 134nếu làm hết thì càng tốt