a. Lập pt của đtròn(C) tâm I(4;2) tiếp xúc với đg thẳng 3x+4y+5=0
b. Viết pt tiếp tuyến của đtròn(C) song song với trục Oy
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1 . geothermal enery is produced from the heat stored in ..... earth ' s core
A. no arle B. the C . an D . a
2 . a lot of .... from several countries competed in many Asian Game
A. spectators B . viewers C . athletes D . audience
3. listener is a person ....... to the concert or music program
A. listened B to listen C being listened D listening
4 . It ' s necessary that all high building be equipped ..... smoke detector
A. in B . with C . by D . for
5 .This is the bus ...... we'll go to school
A. in that B . on which C . by which D . from which
6.water power gives us enery ...........pollution
A . without B . of C . in D . with
7. In VN , many species have become .......... due to the irresponsible activities of people
A. endangered B . endanger C . dangerous D . danger
8 . he is the youngest athlete ....... the prize in this field
A . winning B . won C . to win D . to be won
9. the Asian Games ............... place every 4 years
A. taking B take C took D taken