1) Chia từ trong ngoặc :
a) The villagers wellcomed the visitors .........(warm)
b) She looks ........... in her new coat ( attract )
c) He did not tell me the .............(true)
d)Nam said he would leave the ..........day (follow)
e ) The story begins with a .......... of the author is native village (describe)
1) hoàn thành câu dùng từ gợi ý :
a) somewhere /Jim /I /a few /remembered /months /meeting /ago.
b)Da Lat /she /to /to /take /decided /a bus.
c) walking /her dog /free /in /she /with /enjoys /her /time
1) Cho biểu thức :
\(P=\left(\dfrac{1}{\sqrt{a}-3}+\dfrac{1}{\sqrt{a}+3}\right).\left(1-\dfrac{3}{\sqrt{a}}\right)\) ( với \(a>0;a\ne9\))
a) Rút gọn P
b) Tính giá trị của a để \(P>\dfrac{1}{2}\)
2) Cho biểu thức :
\(C=\dfrac{2\sqrt{a}}{\sqrt{a}+3}+\dfrac{\sqrt{a}+1}{\sqrt{a}-3}+\dfrac{3+7\sqrt{a}}{9-a}\) (với \(a\ge0;a\ne9\) )
a) Rút gọn C
b) Tìm a để \(C< 1\)
1. Rút gọn :
a) \(3\sqrt{2a}-\sqrt{18a^3}+4\sqrt{\dfrac{a}{2}}-\dfrac{1}{4}\sqrt{128a}\) ( với \(a\ge0\))
b) \(\dfrac{\sqrt{2}-1}{\sqrt{2}+2}-\dfrac{2}{2+\sqrt{2}}+\dfrac{\sqrt{2}+1}{\sqrt{2}}\) c) \(\dfrac{2+\sqrt{5}}{\sqrt{2}+\sqrt{3+\sqrt{5}}}+\dfrac{2-\sqrt{5}}{\sqrt{2}-\sqrt{3-\sqrt{5}}}\)
2) Cho biểu thức :
P = \(\left(\dfrac{1}{x-\sqrt{x}}+\dfrac{1}{\sqrt{x}-1}\right):\dfrac{\sqrt{x}}{x-2\sqrt{x}+1}\) (với \(x\ge0;x\ne1\))
a) Rút gọn P
b)Tìm giá trị của x để P \(>\dfrac{1}{2}\)
3) Cho biểu thức :
A= \(\left(\dfrac{\sqrt{a}}{\sqrt{a}-1}-\dfrac{\sqrt{a}}{a-\sqrt{a}}\right):\dfrac{\sqrt{a}+1}{a-1}\) ( với \(a>0;a\ne1\))
a) Rút gọn P
b) Tìm giá trị của A để A<0
1. chia từ trong ngoặc :
a) Last night, the TV program was very ..................(interest)
b) You do not have to spend your time in a .......................place (crowd)
c) Be ...............when you shop on the Internet (care)
d) Tam and I play for the school soccer team . We are .............(team)
2 . Tìm và sửa lỗi sai
a) I would like you to meet a very good friend of our
b) You are going to come to the party , will you ?
c) It is impossible to prevent them of quarreling each other.
d) I do not think I could ever get used to go to work so early