GIúp em với mọi người
C Complete the second sentence so that it has a similar meaning to the first sentence. Use the words
in bold.
1 Have you got any plans for the weekend?
DOING
What ________________ this weekend?
2 He must get access to an internet connection in order to see your email.
ONCE
He will be able to see your email, ________________ an internet connection.
3 Stacy started taking computer lessons from September and she will take her exams in May.
BEEN
By the time Stacy takes her exams, she ________________ computer lessons for nine months.
4 I’ll get home and I’ll text you.
SOON
I’ll text you ________________ home.
5 We have arranged to give an online seminar on 9 December.
ARE
We ________________ an online seminar on 9 December. Not For Sale
6 I had no intention of buying anything online.
WAS
I ________________ to buy anything online.
7 Tina told me she was having problems with their after sales service, so I didn’t shop from them.
GOING
I ________________ from them, but Tina told me she was having problems with their after sales service.
8 I’ll still be replying to emails when you get here.
NOT
By the time you get here, I ________________ replying to emails.
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ta có điều kiện \(\hept{\begin{cases}2x-1\ge0\\x-1\ge0\\3x+1\ne2x-1\end{cases}\Leftrightarrow x\ge1}\)
vậy BPT \(\Leftrightarrow\frac{3x\left(\sqrt{2x-1}-\sqrt{x-1}\right)}{2x-1-\left(x-1\right)}-\frac{\left(x+2\right)\left(\sqrt{3x+1}+\sqrt{2x-1}\right)}{3x+1-\left(2x-1\right)}>0\)
\(\Leftrightarrow3\left(\sqrt{2x-1}-\sqrt{x-1}\right)-\left(\sqrt{3x+1}+\sqrt{2x-1}\right)>0\)
\(\Leftrightarrow2\sqrt{2x-1}>\sqrt{3x+1}+3\sqrt{x-1}\Leftrightarrow8x-4>12x-8+6\sqrt{3x+1}.\sqrt{x-1}\)
\(\Leftrightarrow4-4x>6\sqrt{3x+1}.3\sqrt{x-1}\) vô lí do vế trái \(\le0\forall x\ge1\) còn vế phải lớn hơn bằng không
vậy bất phương trình vô nghiệm

nS = 6,4/32= 0,2 mol ; nZn = 6,5/65 = 0,1 mol
Phương trình hóa học :
Zn + Sto→ ZnS
Vì nS > nZn nên S dư
Vậy sau phản ứng thu được ZnS và S dư
có mZnS = 5,625 - 0,1.32 = 2,425 g
=> nZnS = 2,425:97=0,025
H%=0,025:0,1 = 25%


1,is
2,the
3,has
4,go
5,class
6,go
7,to
8,do