1.Người việt đã tiếp thu tư tưởng Nho Giáo của văn minh Trung Hoa như thế nào?

Giúp mình với ạ^^

1. Sally called from Miami and said that she (go) went the following week.

2. Ba said he (get) had gotten some good marks the previous  semester.

3. The student said that the English test (be) was the most difficult.

4. They told their parents that they (try) would try their best to do the final test.

5. The next meeting (will/ hold) will be held in May. 
9. All traffic laws (must/observe) mush be observed .

10. Fruits (should/not/put) shouldn't be put in a freezer.
13. Animals will take more time to flee from danger if they (live) live in cities and are bolder

Cho Parabol y=x² có đồ thị là (P).

a). Vẽ (P)

b). Gọi (D) là đường thẳng có phương trình y=-2x+b. Tìm b biết rằng (D) tiếp xúc với (P). Vẽ (D) và (P) trên cùng một hệ toạ độ. Xác định toạ độ giao điểm của chúng.

1/People have polluted the environment 

→The environment has been polluted by people.

2/ Ride your bike carefully or you will cause accident

→If you don't ride your bike carefully, you'll cause accident.

This is a difficult problem. I wish i ... the answer.

A. knew          B. knowing          C. know          D. known

Peter ... have lunch in the school canteen when he was in grade 6.

A. was used to          B. is used to          C. used to          D. gets used to

Traffic ... in Vietnam usually occur in such big cities as Hanoi and Ho Chi Minh City.

A. jams          B. system          C. safety          D. light

You will become ill ... you stop working so hard.

A. until           B. unless          C. if          D. when

City dwellers are more likely to ... stress and anxiety than people who live in the countryside.

A. put up with          B. get over          C. suffer from          D. look forward to

C

1. had lived /moved.

2. died /were performing.

3. was /haven't seen.

4. was cleaning /noticed.

5. finished /had been.

6. was crossing /caught.

7. was /booked.

8. hear /shouted.

9. had you read/ interrupted.

10. wanted/ had already done.

11. watched/ didn't realise.

12. tidied/ sat/ had.

13. Have you ever visited/ lived.

14. called/ saw.

15. came/ had forgotten.

Giải các pt sau:

a)      3X² + 8X + 4 = 0 

           (a=3 ; b=8;  c=4; b'=\(\dfrac{b}{2}\)= 4)

Lập đenta':

Δ'= b'-a.c= 4-3.4=-8

=> PT vô nghiệm.   

b)      X² + 9X + 18 = 0

              (a=1; b=9; c=18)

Lập đenta:

Δ=b-4.a.c= 9-4.1.18=-63

=>PT vô nghiệm.

c)      X² + 12 + 32 = 0

(a=1; b=12; c=32; b'=\(\dfrac{b}{2}\)=6)

Lập đenta':

Δ'=b'-a.c= 6-1.32=-26

=>PT vô nghiệm