Bạn Bình và mẹ dự định đi du lịch Hội An và Bà Nà trong 6 ngày. Biết rằng chi phí trung bình mỗi ngày tại Hội An là 1.500.000 đồng, còn tại Bà Nà là 2.000.000 đồng. Tìm số ngày nghỉ tại mỗi địa điểm, biết số tiền mà họ phải chi cho toàn bộ chuyến đi là 10.000.000 đồng.

Rewrite the following sentences without changing their meanings. Begin with the given cues:

1) What about buying energy-saving bulbs?

--> Shall

2) Let's use electricity economically.

--> Why

3) Let's protect against the use of nuclear power.

--> How about

4) Why don't you ask her yourself?

--> I suggest

5) Why don't we collect unused clothes for the victims of the natural disaster?

--> Shall

6) What about organizing charity event to raise money?

--> I suggest we

7) What shall we do on Saturday night?

--> What do you suggest we

8) "Why not take the garbage to recycling centres?" said the local authorities.

--> The local authorities suggested

9) His wife said: "Let's have dinner after the theater"

--> His wife suggested that

10)"Shall we go to the English-speaking club?" said Andrew.

--> Andrew suggested

11) "Why don't you sit down for a moment?" he asked.

--> He suggested

12) "Why don't we spend money on research into solar energy ?" Anne said.

--> Anne suggested

13) "Why don't you repair the electric fan, Ba?"

--> She suggested

14) "Why don't you put an ad in this local newspaper?" they said to me.

--> They suggested that

15) "Let's not tell anyone until we are certain that the report is true" said Tom.

--> Tom suggested that

Sentence ←→ Noun Phrase:

1) In spite of being so lazy, he passed the exam.

--> Although

2) Despite being rich, he doesn't buy anything.

--> Though

3) Inspite of her beauty, she is very lazy.

--> Even though

4) Despite the cloudy weather, they wanted to go for a walk.

--> They wanted to go for a walk although

5) Nam can finish his homework in spite of the difficult exercises.

--> Although

6) In spite of the bad weather, they wanted to go out.

--> Although

7) Despite the heavy rain, the weather wasn't cold.

--> The weather wasn't cold although

8) Although she is ill, she goes to school every morning.

--> Despite

9) The exercise was difficult but he could find the answer.

--> Athough

10) I'm seriously sick, so i don't want to go out.

--> Because

11) Because of the polluted water, we can't swim in the water.

--> Because

12) As a fast runner, he won the prize.

--> Because he

13) Because of the heavy rain, we didn't go out for a walk.

--> Because

Câu suggest:

1) Why don't we give lesson to poor children?

--> I suggest

2) Why don't we cut the grass behind our school?

--> I suggest

3) I suggest that we should swim in the morning.

--> I suggest

4) What about getting to know each other and having a drink?

--> I suggest that

5) I suggest helping elderly people and war invalids.

--> I suggest that elderly

6) I suggest that we should reuse and recycle waste paper.

--> I suggest

7) I suggest that we should stop putting garbage everywhere in our school.

--> I suggest that garbage

8) Why don't we use public buses instead of motorbikes?

--> I suggest

Người ta tải đi công suất điện 400 kW; hiệu điện thế 20 kV; điện trở đường dây tải 10 Ω.

a) Tính công suất hao phí.

b) Muốn công suất hao phí giảm 100 lần thì phải tăng hiệu điện thế lên bao nhiêu?

1) Because I am sick, I don't want to go out.

→ Because of my

2) Because the water is polluted, we cannot swim in this river.

→ Because of

3) Because Na has a sore leg, she has difficulty in walking.

→ Because of

4) Because he behaved badly, he found himself in trouble.

→ Because of his

5) Because it was snowing, we didn't go out for a walk.

→ Because of

6) Because of his serious sickness, he couldn't come to class.

→ Because

7) Because of your advice, we didn't use that poisonous chemical.

→ Because

8) Because of their good performance, they won that match.

→ Because

9) Because of his good looks, he is popular with many girls.

→ Because

10) Because of too much exhaust fume, people have to wear gauze masks in the streets.

→ Because

1) Because Na has a sore leg, she has difficulty in walking.

—>

2) Because it was snowing, we didn’t go out for a walk.

—>

3) Because of his serious sickness, he couldn’t come to class.

—>

4) Because of your advice, we didn’t use that poisonous chemical.

—>

5) Because of his good looks, he is popular with many girls.

—>

Một người đứng trên tháp quan sát của ngọn hải đăng cao 50m nhìn về hướng Tây Nam, người đó quan sát hai lần một con thuyền đang hướng về ngọn hải đăng. Lần thứ nhất người đó nhìn thấy thuyền với góc hạ là 20 độ, lần thứ 2 người đó nhìn thấy thuyền với góc hạ là 30 độ. Hỏi con thuyền đã đi được bao nhiêu mét giữa hai lần quan sát. (làm tròn đến chữ số thập phân thứ hai)