26. I've never been to a less exciting concert.
It was ............................................................................................................................
27. If he improves his spelling, he will get good grades.
Unless ............................................................................................................................
28. "I'll never come back here again," said the angry tourist.
The angry tourist ....................................................................................................................
29. The red car is $25.000. The blue car is $15.000. (Comparison)
The red car ............................................................................................................................
30. Because of being lost, we stopped to ask a policeman for directions.
We ............................................................................................................................
31. We are worried because we have to live very far from our parents.
We wish ............................................................................................................................
32. He hasn't been to the doctor's for over a year.
He hasn't had ............................................................................................................................
33. That old keyboard is not worth repairing.
It is pointless to .................................................................................................................
34. I last met her at the station a year ago.
I haven't ............................................................................................................................
35. They said we couldn't look at the house. (didn't allow)
............................................................................................................................
36. I went away, so he had to solve the problem.
I left ............................................................................................................................
37. It's an eight–hour flight to the West Coast.
It takes ............................................................................................................................
38. "Why don't you postpone your trip till the fall, Jim?" suggested Sarah.
Sarah suggested ...........................................................................................................................
39. "You'd better not spend any more time in the sun, Kate" said Annie.
Annie advised ............................................................................................................................
40. Don't tell anyone if we let you into the secret.
Don't tell anyone if you ...........................................................................................................
41. They used to sew every button on by hand.
Every button ............................................................................................................................
42. I prefer to go by myself.
I would ............................................................................................................................
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
IV - Read the following passage, then choose the correct answer to questions 26 - 30. (0,2)
I went to Australia on a student program last year and I like to (26)_______you about it. I was very (27)_______when I knew I was going to Australia because I had never been there before. I didn’t think about the problems of speaking English (28)_______I met my host family. At first I couldn’t communicate with them because my English was so bad. All the five years I had been learning English wasn’t much used at all (29)_______we didn’t have real practice at school. Even though my grammar was good, my pronunciation wasn’t. My problem is (30)_______ ‘l’ and ‘r’. For example, Australian people often asked “What do you eat in Vietnam?” I wanted to tell them that we eat rice, but they didn’t understand when I said “We eat lice”…
| 26. A. say | B. tell | C. talk | D. speak |
| 27. A. exciting | B. excites | C. excited | D. excite |
| 28. A. after | B. until | C. when | D. while |
| 29. A. although | B. even | C. because | D. so |
| 30. A. pronouncing | B. speaking | C. reading | D. telling |
Read the following passage, then choose the correct answer to questions 26 - 30.
I went to Australia on a student program last year and I like to (26)_______you about it. I was very (27)_______when I knew I was going to Australia because I had never been there before. I didn’t think about the problems of speaking English (28)_______I met my host family. At first I couldn’t communicate with them because my English was so bad. All the five years I had been learning English wasn’t much used at all (29)_______we didn’t have real practice at school. Even though my grammar was good, my pronunciation wasn’t. My problem is (30)_______ ‘l’ and ‘r’. For example, Australian people often asked “What do you eat in Vietnam?” I wanted to tell them that we eat rice, but they didn’t understand when I said “We eat lice”…
26. A. say B. tell C. talk D. speak
27. A. exciting B. excites C. excited D. excite
28. A. after B. until C. when D. while
29. A. although B. even C. because D. so
30. A. pronouncing B. speaking C. reading D. telling
d; 231 + 26 - (209 + 26) =
= 231 + 26 - 235
= 257 - 235
= 22
Bài 1:
a) (-15+IaI ) - 30 = -26
=> -15 + IaI = -26 + 30
=> -15 + IaI = 4
=> IaI = 4 - ( -15 )
=> IaI = 4 + 15
=> IaI = 19
=> a = 19 hoặc a = -19
b) I -15 + a I - 30 = -26
=> I -15 + a I = -26 +30
=> I -15 + a I = 4
=> -15 + a = 4 hoặc -15 + a = -4
=> a = 4 - ( -15 ) => a = -4 - (-15 )
=> a = 4 + 15 => a = -4 + 15
=> a = 19 => a = 11
c) -IaI + 21 = 45 + ( -16 )
=> -IaI + 21 = 45 - 16
=> -IaI + 21 = 29
=> -IaI = 29 - 21
=> -IaI = 7
=> -(-a) = 7 hoặc -a = 7
=> a = 7 => a = -7
-13.|a| = -26
=> |a| = -26 : (-13)
=> |a| = 2
=> a thuộc {-2; 2}
Vậy...
Gọi hai đường cao tương ứng với 2 cạnh 26cm và 35cm lần lượt là a, b
tam giác đó là tam giác ABC
Ta có : \(S_{\bigtriangleup ABC}=\dfrac{26a}{2}=\dfrac{35b}{2}\)
\(\Rightarrow26a=35b\)
\(\dfrac{a}{35}=\dfrac{b}{26}\)
Áp dụng t/c dãy tỉ số bằng nhau ta có :
\(\dfrac{a}{35}=\dfrac{b}{26}=\dfrac{a+b}{35+26}=\dfrac{48,8}{61}=0,8\)
\(\Rightarrow a=0,8.35=28\left(cm\right)\)
Vậy đường cao tương ứng với cạnh 26cm có độ dài 28cm
Giúp mình với