rewrite the following sentences.
1. It took him four hours to fly to America .
- It was .....................................................................
2. They came late. They left early.
- They not only .........................................................
3. Do you have a cheaper computer than this ?
- Is this ......................................................................?
4. Tom works harder than Peter.
- Peter.........................................................................
5. This novel has three hundred pages.
- It is a ...................................................................................
6. The children couldn't go swimming because the sea was rough .
- The sea was so .............................................................................
7. I never go to school late .
- I am ....................................................................................................
8. Please, don't talk much in the class
- I'd .......................................................................
a) Mạch bổ sung: GCATCAGTGCT
b) Trình tự gene:
Mạch 1: CGTAGTCACGA
Mạch 2: GCATCAGTGCT
c) Số nucleotide của gene A = T = 5 → Số nucleotide môi trường cần cung cấp khi nhân đôi 5 lần = 5 x (25 -1) = 155.
Số nucleotide của gene G = C = 6 → Số nucleotide môi trường cần cung cấp khi nhân đôi 5 lần = 6 x (25 -1) = 186.