Một phân tử ARN có cấu trúc: - A – A – U – X – G – G – X – A - . Cấu trúc mạch khuôn của gen tổng hợp nên phân tử ARN đó là A. mạch khuôn: - T – T – T – G – X – X – G – T – B. mạch khuôn: - T – T – A – G – X – X – X– T – C. mạch khuôn: - T – T – A – G – X – X – G – T – D. mạch khuôn: - A – A – T – X – G – G – X – A –

Choose the best answer.

I think you should buy _____  pack of mineral water instead. And you can also buy _____  snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______  cookies and soft candies.

Choose the best answer.

We should decorate our living room with _____ orange banner. We also need ________  ribbons, balloons, party hats and costume.

Choose the best answer.

I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.