Câu 1: Trình bày vai trò, vị trí của nghề điện dân dụng trong sản xuất và đời sống?
Câu 2: Trình bày yêu cầu của nghề điện dân dụng đối với người lao động?
Câu 3: Nêu cấu tạo của dây dẫn điện, khi lựa chọn dây dẫn điện cần chú ý gì?
Câu 4: Nêu nguyên tắc chunh khi đo điện trở bằng đồng hồ vạn năng?
cho tam giác ABC vuông tại A có AB=3cm, BC=5cm, vẽ đường cao AH của tam giác ABC
a)CM tam giác ABC đồng dạng với tam giác HBA
b)CMR AB^2 = BH.BC. tính BH
c)Dựng đường phân giác BD của tam giác ABC cắt AH ở E. Tính EH/EA. tính EH .
d) tính diện tích tứ giác HEDC
1. This last time Tom came back to his hometown was 5 years ago. => Tom hasn’t…………………………………………………………………………
2. He started working as a teacher 6 months ago. => He has………………………………………………………………………………
3. It has been 3 years since we first went to Japan. => We have…………………………………………………………………………………
4. I last had my hair cut in June. => I haven’t………………………………………………………………
5. The last time we met was 2 years ago. => We haven’t………………………………………………………………………
6. It has been a long time since we last called each other. => We haven’t…………………………………………………………
7. When did you have 10 scores in Math? => How long………………………………………………………………?
8. This is the first time I had such an exciting trip =>I have never…………………………………………………………………………
9. I haven’t seen Anna for 10 days. => The last……………………………………………………………………………
10. Today is Sunday. I haven’t taken a bath since Thursday. => It is……………………………………………………………………
Reported statements: Rewrite the following statements into teported speech
1 lena said,"I will invite you to my birthday party"
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2 The doctor said, " your aunt doesn't need an operation"
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3 Helen said,"I can speak Spanish fluenly"
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4 Selena said,"I'm watching the late-night show"
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5 Mr Cooper said, "I take my medicine ragularly"
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6 John said, "I am going to work for a new company next month"
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7 Mary said, " I have just come back from Europe"
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8 "I am waiting at the bus stop number ten" he told me
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9 " I will resign tody" the minister announced this morning
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10 " Jane may move to a new flat", Rachel said