I.Choose the correct word and make the round
1.Their trip to Nha Trang __________________wonderful.
a.was b.were c.is d.are
2.We ______________lot of souvenir in Nha Trang last week.
a.buy b.bought c.buys d.are buying
3.Their children saw many different types of ______________in the aquarium.
a.animals b.fish c.birds d.plants
4.Liz bought a_______________and hung it on the wall at home.
a.magazine b.newspaper c.aquarium d.poster.
5.They enjoy __________________stamps.
a.collect b.collecting c.collects d.collected
6.Liz ________________in Ha Noi last month.
a.arrive b.arrives c.arrived d.will arrive
7.After their visit to the aquarium,they went to a foodstore _________________lunch
a.at b.to c.in d.for
8.We can buy clothes at the __________________.
a.bookstore b.shoe store c.clothing store d.clothes store
9.__________noodle and beef for dinner last night?
a.Were you eat b.Did you aet c.Did you ate d.Do you aet
10.Ba and his brother _________________at home yesterday.
a.didn’t be b.aren’t c.weren’t d.was not
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a) Vì \(\Delta MNP\)cân tại M
=> \(MN=MP\)và \(\widehat{MPN}=\widehat{MNP}=70^0\)
=> \(\widehat{NMP}=180^0-\left(\widehat{MNP}+\widehat{MPN}\right)=180^0-\left(70^0+70^0\right)=180^0-140^0=40^0\)
b) Ta có : \(MN=MH+HN\)
\(MP=MK+KP\)
Mà \(MN=MP,NH=KP\)=> \(MH=MK\)
Xét \(\Delta MHK\)có :
\(MH=MK\left(cmt\right)\)
=> \(\Delta MHK\)cân tại M ( đpcm )
c) \(\Delta MHK\)cân tại M
=> \(\widehat{H}=\widehat{K}\)( hai góc ở đáy ) ( 1 )
Ta có : \(\widehat{M}+\widehat{H}+\widehat{K}=180^0\)
\(40^0+\widehat{H}+\widehat{K}=180^0\)
\(\widehat{H}+\widehat{K}=180^0-40^0=140^0\)( 2 )
Từ ( 1 ) và ( 2 ) => \(\widehat{H}=\widehat{K}=\frac{140^0}{2}=70^0\)
Ta có : \(\widehat{H}=\widehat{N}=70^0\)
mà hai góc ở vị trí đồng vị
=> \(HK//NP\)( đpcm )
* Hình ở Thống kê hỏi đáp *
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a, AH = AD (gt)
=> tam giác AHD cân tại A (đn)
=> góc ADI = góc AHI (tc)
xét tam giác ADI và tam giác AHI có : AD = AH (gt)
DI = IH do I là trung điểm của DH (gt)
=> tam giác ADI = tam giác AHI (c-g-c)
b, tam giác AHC vuông tại H
=> góc CAH + góc ACH = 90 (đl)
có ACH = 30 (gt)
=> góc CAH = 60
xét tam giác AHD cân tại A (câu a)
=> tam giác AHD đều (dh)
c, tam giác ADI = tam giác AHI (Câu a)
=> góc DAK = góc HAK (đn)
xét tam giác DAK và tam giác HAK có : AK chung
AD = AH (gt)
=> tam giác DAK = tam giác HAK (c-g-c)
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ta có :
8 =\(\frac{7.5+8.3+9.n+10.1}{5+3+n+1}\)
8 = \(\frac{69+9.n}{9+n}\)
suy ra 8(9+n)=69 +9n
---> 72+8n=69+9n
---> n=3
Ta có
7*5+8*3+9*n+10*1/5+3+n+1=8
69+9n/9+n=8
>69+9n=8*(9+n)
>69+9n=72+8n
>n=80-78
N=2
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I. Supply the correct verbs form. (15 pts)
1. Where is Tom? – I don’t know. I (not see)___didn't see___ him this afternoon.
2. He (spend)___spends___ his free time (read)___reading___ books every day.
3. If you feel tired, please (lie)__lie____ down for a moment and you (feel)__will feel____ better
4. How much you (save)___have you saved___ since Christmas? I (save)___have saved___ $5.
5. I’m sure you are capable of (pass)____passing__ the exam.
6. When I’m on holiday, I enjoy (not have)__not having____ (get)__to get____ up early.
7. The theater is quite old .It (build)___was built___ over 100 years old.
8. It’s the first time he (win)____has won__ the school prize.
9. When I (see)____saw__ him, he (talk)___was talking___ to somebody so he (not recognize)___didn't recognize___ me then.
IV. Choose the correct words in brackets. (10 pts)
1. My dog is the (prettier/ prettiest) of the two.
2. This soup tastes (well/ good).
3. This map was of (a great use/ great use) to me on a trip.
4. He works much (more hard/ harder) than he used to .
5. I regretted (staying/ to stay) in the same job for a long time.
6. My mother is a very good (cook/ cooker).
7. Her father is (a/ an) university lecture.
8. My maths (is/ are) getting worse.
9. The others can’t come so you’ll have to come (alone/ lonely).
10. He was very (asleep/ sleepy) so he went to bed early.
1b
2b
3b
4d
5b
6c
7d
8d
9 ko có đáp án đúng nếu aet là eat thì là câu b
10c