okok bạn thì kinh rồi:))

Many people now think that teachers give students too (05) …………………homework. They say that it is (06) …………………for children to work at home in their free time. Moreover, they argue that most teachers do not properly plan the homework tasks they give to students. The (07) …………………is that students have to repeat tasks which they have already done at school.

Recently in Greece many parents complained (08) …………………the difficult homework which teachers gave to their children. Most people agree that homework is unfair. A student who can do his homework in a quiet and comfortable room is in a much better position than a student who does his homework in a small, noisy room with the television on. Some parents help their children with their homework. Other parents (09) …………………no interest at all in their children’s homework.

It is important, however, that teachers talk to parents about homework. A teacher should suggest suitable tasks for parents to do with their children. Parents are often better (10) …………………teaching their own children!

05. A. many             B. much                    C. more                          D. less

06. A. necessary       B. necessity      C. unnecessary           D. unnecessarily

07. A. cause            B. reason                  C. purpose                      D. result

08. A. about                  B. to                            C. with                        D. on

09. A. make                 B. do                           C. take                               D. give

10. A. in                       B. at                             C. on                                  D. with

Trong các axit: HCl, HNO3, H2SO4, H2CO3. Axit  yếu nhất là: H₂CO₃

Lưu huỳnh đioxit được tạo thành từ cặp chất : K₂SO₃ và H₂SO₄

Oxit bazơ nào sau đây được dùng để làm khô nhiều nhất là: CaO

thi thì tự làm

1.B

2.A

3.D

4.C

5.B

6.B

7.C

8.A

9.A

10.A

11.C

12.C

39. The table was made of wood by grandfather in 1920.

40. Playing video games much can discourage students from doing well in school.

a). tự vẽ.

b). -Gọi A(x_A;y_A) là giao điểm của 2 đường thẳng (D) và (D').

    -Lập phương trình hoành độ giao điểm, ta có:

 ⇒ x - 2  = 2x - 3

⇔ x - 2x= -3 + 2

⇔   -x   =  -1.

⇔   x    =   1.

Thay x vào hàm số y=x-2 thì ta thu được:

⇒   y = x-2 

⇔ y = 1-2

⇔y  = -1.

Vậy A(1;-1) là toạ độ giao điểm cần tìm.

c). Để giá trị m có đồ thị hàm số y=(m-2)x+m+3 song song với đồ thị hàm số (D') thì:

\(\left\{{}\begin{matrix}a=a'\\b\ne b'\end{matrix}\right.\)⇒\(\left\{{}\begin{matrix}m-2=2\\m+3\ne-3\end{matrix}\right.\)⇔\(\left\{{}\begin{matrix}m=4\\m\ne-6\end{matrix}\right.\)

Vậy đths y=(m-2)x+m+3 song song với đths (D') khi m=4.

B

1. “Why are you so late?” she asked me.

 She asked me why I was so late.

2. “Can you play the piano?” he asked the girl.

 He asked the girl if I could play the piano.

3. “Do you like pop music?” Helen asked Bob.

 Helen asked Bob if I liked pop music.

4. “Where do you live, boys?” the man asked the children.

 The man asked the children where he lived.

5. She asked me, “Why do I have to do this work?”

 She asked me why I had to do that work.

6. “Is your father a farmer, Tom?” Linda asked.

 Linda asked Tom if his father was a farmer.

7. “What’s your name?” the examiner asked Ann.

 The examiner asked Ann what her name was.

8. “Can you lend me some money?” Harry said to Susan.

 Harry said to Susan if she could lend her some money.

9. “How long does it take you to go to school every day?” the teacher asked us.

 The teacher asked us how long I took go to school every day

10. “Is your house far from here, Jack?” Tina asked.

 Tina asked Jack if his house was far from there.