Không có kính rồi xe không có đèn

Không có mui xe thùng xe có xước

Xe vẫn chạy vì miền Nam phía trước

Chỉ cần trong xe có một trái tim

chỉ ra phép tương phản và phân tích 

tìm giá trị nhỏ nhất của A biết A= (x+7)/ ((căn x)+3)

biết B/A=( (căn x)-3)/( (căn x) -2)

36. Rice can‟t possibly grow in such poor soil.
A. It‟s impossible for rice to grow in such poor soil.
B. Growing rice in such poor soil can be realised.
C. Rice is incapable of growing in such poor soil.
D. Such poor soil may be suitable for rice to grow.
37. We have never experienced such bad floods in our region before.
A. Those are the worst floods we have ever experienced in our region.
B. We only sometimes experience very bad floods in our region.
C. Bad floods have never happened in our region before.
D. In our region, we have never seen and will never see bad floods.
38. Hoang was succeeded by Chung as the president of the 3R Club.
A. Hoang was more successful as the president of the 3R Club than Chung.
B. Hoang followed Chung as the president of the 3R Club.
C. Chung followed Hoang as the president of the 3R Club.
D. Chung was more successful as the president of the 3R Club than Hoang.
39. I don‟t think you should ring him now. It‟s rather late.
A. You might not ring him now because it‟s rather late.
B. You‟d better not ring him now as it‟s rather late.
C. It‟s very late now, but I think you should ring him.
D. I don‟t think it‟s late now, so you should ring him.
40. The new supermarket looks good. It seems to have few customers.
A. The new supermarket is really good; that‟s why it has few customers.
B. Due to its good appearance, the new supermarket seems to have few customers.
C. The new supermarket looks good, and so it seems to have few customers.
D. Although the new supermarket looks good, it seems to have few customers.

mn giúp mik câu c vs ạ

: Cho một thanh sắt có khối lượng 50g vào 200 ml dung dịch CuSO₄ 10 % (D = 1,12g/ml). Sau phản ứng nhấc thanh sắt ra rửa nhẹ, sấy khô cân được 50,4g

a. Tính khối lượng kim loại đã tham gia phản ứng và kim loại tạo thành.

b. Tính nồng độ phần trăm của chất có trong dung dịch sau phản ứng.