cho đường thẳng y=(2m+1)x+2.Góc tạo bởi đường thẳng này với trục Ox là góc nhọn khi :

A.m lớn hơn \(-\frac{1}{2}\)

B.m nhỏ hơn \(-\frac{1}{2}\)

C.m\(=-\frac{1}{2}\)

D.m=1

1.You have to keep your ... from that snake.(distant)

2.They are... greeted by the native .(warm)

3.The ... by thhe litter girl was a great hit .(perform)

4.some young people today have a very strange...(appear)

5.many ...have made lost of changes to the ao dai .(design)

6.although she is rich,she lives...(unhappy)

7.They went to see most of the ...places(interest)

8.air ...makes us unhealthy.(pollute)

1. Shall we go to the movies ? - Yes , (That' s a good ideal / we shall / we do )

2. She is thirsty and he is (so/ too / either )

3. Fruit juice is good (for / to / with ) our health

4.He is a (skill / skillful/ skillfully ) volleyball player

5.She ought to ( finish / finishes / finished) her homework before going to bed .

6. (When/ What /Why ) was Lan absent yesterday ? Because she was sick .

7. (Walking/ to walk / walk ) is a fun , easy and inexpensive

8. Liz and her parents (go/ to go / went ) to Nha Trang last week .

9. Remember to ( lose / keep / make ) in touch with me

10. The girl decided to learn (how / what / which ) to use a sewing machine .

11.(What / why/ who ) did Hoa go to the dentist ? Because she had a cavity

37. What would he like (to watch / watching / watches/ watched )?

38. This river is very (danger/ dangerously/ dangerous/ be dangerous ) for the swimmers.

39. She was busy last Sunday and (neither / so/ too/ either ) was her husband.

40.Mai can swim very well and Hoa can swim very well ( too/ so / neither/ either)

31.What is your (weight/height/age ),Lan?I'm 45 kilos

32.What are the ( diseases/symptoms/medicines )of the common cold? They are : a sunny nose , a slight fever ,coughing and sneezing.

33.May I have (some / any / few/ a few )sugar, please?

34. Hoa prefer colorful dances in Thailand (to/than/for /as) shadow puppet shows in Indonesia

35. Durông his life, Thomas Edison (invention/invent/invented/ inventor) over 1300 things

36. TV viewers can (take part / do/ make/ interest) in some contests.