Cho 2 đường thẳng (d): y=mx-2
(d'): y=(m-2).x+m
a) Tìm tọa ddoooj giao điểm của (d) và (d') khi m=\(-\sqrt{3}\)
b) CMR: với mọi m đường thẳng (d) đi qua điểm cố định B và đường thẳng (d') đi qua điểm cố định C
c) Tìm m để giao điểm A của 2 đường thẳng thỏa mãn điều kiện góc BAC=90 độ
1. Your rudeness brought us ...
A. sad B. sadly
C. sadness D. comfort
2. At this moment I ... that we have a good chance of victory
A. was feeling B. am feeling
C. had been feeling D. feel
3. You have to be ... your stupidity
A. ashamed of B. shamed of
C. ashamed for D. timid of
4. This knife is really ... I'll have to sharpen it
A. blunt B. dull
C. flat D. frank
5. Where are you going? I'll give you...
A. a ladder B. a lift
C. an elevator D. a staircase
Câu bị động:
1. They ought to white-wash the building for the celebration
2. You must attach a birth certificate to the application
3. You should inform the school of your change of address
4. All students have to take the fina examination
5. You can obtain that information at the information desk
6. you don't have to complete that assignment this week
Câu bị động:
1. We should send for the doctor immediately
2. They are going to announce the exam results tomorrow
3. They should widen the road at this point
4. An expect should check these machines regulary
5. We'll have to repair the roof before the rainy season comes
Chọn giới từ
1. Are you doing anything... the end of next week?
2. I fell asleep in front of the TV... the fooyball match
3. The builders say they'll have finished the job next weekend.. the latest
4. I found my new contact lenses strange... first, but I got used to them... the end