1 Was that house built in 1972

2 I wasn't invited to the birthday party 

3 She will be given a prize by the teacher if she works well

4 He was said to be able to swim across this river

5 You were showed the way to Thule Zoo by the police

6 I won't be told the truth about the situation by him

7 The valley can be seen from the top of this hill

8 He was chosen the monitor by all the students

9 Your hand must be washed

10 Many matches haven't been won by my favorite football team so far this season

11 This bicycle has been used for 5 years by my father

12 Measures are being taken to attract foreign investment by the government

13 Her house was broken into last night

14 How is this amount of money spent by you?

15 Have any good films been seen by you so far?

16 How was your leg broken?

17 The postman is being attacked by my dog

I

1 C

2 D

3 B

4 B

5 C

6 B

7 B

8 C

9 C

10 B

II

1 is => was

2 am => were

3 play => playing

4 good => well

5 is => were

6 didn't => hasn't

7 to get => getting

8 can => could

9 serious => seriously

10 which => who

1 would invite

2 sold

3 would buy

4 rains

5 is

6 could pass

7 repaired

8 will help

9 will do

10 learn

11 will have

12 looked

13 fed

14 would understand

15 would arrive

16 wouldn't have had

17 swim

18 press

19 asked

20 would call

21 cycle

22 will miss

23 had

24 woud support

25 will phone

26 goes

27 parked

28 don't wear

29 will get

30 will turn

31 go

32 didn't rain

33 wore

34 would watch

35 had signed

36 would live

37 switched off 

38 would understand

39 had explained

40 would have arrived

41 won't play

42 grew

43 would see

44 didn't have to do

45 hadn't stayed up

46 wait

47 would miss

48 would have help

49 had used

50 would be

I

1 D

2 C

3 A

II

1 C

2 B

II

1 It appears in homes, stores, and even airport

2 Yes, it is

B

1 A

4 A

5 D

1 A new mall will be built here next week

2 Julia has worked for this company for 6 years

3 The man in chief suggested checking everything one more

4 Because it rained heavily, we were late for school

5 It is interesting to go swimming in the river in the summer

1. A new mall will be built here next year.

2. Julia has worked for this company for six years.

3. The man in chief suggested checking everything once more.

4. Because it rained heavily, we were late for school.

5. It is interesting to go swimming in the river in the summer.

THAM KHẢO

Câu 3:

a) Hiện tượng nước bám vào thành ngoài của ly: Vì ly đựng nước đá có nhiệt độ thấp do đó các hơi nước có trong không khí xung quanh ly nước đá gặp lạnh thì xảy ra hiện tượng ngưng tụ thành nước và đọng lại, bám lên thành ngoài của ly nước đá.

b) Khi trồng chuối (hoặc trồng mía) người ta phải phạt bớt lá để giảm bớt sự bay hơi, làm cây ít bị mất nước (do lúc mới trồng chuối rễ chuối còn chưa phát triển khỏe mạnh nên không thể hút nước được).

c) Những ngày lạnh (nhiệt độ bên ngoài thấp hơn nhiều so với thân nhiệt) thì hơi nước bị ngưng tụ tạo thành những giọt nước li ti trông như "sương khói". Những ngày khác thì hơi nước trong hơi thở của chúng ta sẽ "hòa tan" trong không khí ngay lập tức và vì chúng ở dạng hơi nên chúng ta đâu có nhìn thấy !

d) Trong hơi thở của người có hơi nước. Khi gặp mặt gương lạnh, hơi nước này ngưng tụ thành những giọt nước nhỏ làm mờ gương. Sau một thời gian những hạt nước này lại bay hơi hết vào không khí và mặt gương lại sáng.

Thanks ạ!

2.

\(x^2+2x+m+1\le0\)

\(\Leftrightarrow m\le f\left(x\right)=-\left(x+1\right)^2\)

Yêu cầu bài toán thỏa mãn khi:

\(\Leftrightarrow m\le maxf\left(x\right)=max\left\{f\left(-1\right);f\left(3\right)\right\}=0\)

Vậy \(m\le0\)

3.

\(f\left(x\right)=x^2-2mx-3m\le0\)

Yêu cầu bài toán thỏa mãn khi:

\(\left\{{}\begin{matrix}\Delta'\ge0\\f\left(-1\right)\le0\\f\left(3\right)\le0\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}m^2+3m\ge0\\1-m\le0\\-9m-9\le0\end{matrix}\right.\Leftrightarrow m\ge1\)

Vậy \(m\ge1\)