EXERCISE 1: Replace the words in brackets in the following sentences with a suitable phrasal verb. Make any other necessary changes. call on get on for do in turn down go down look up get down go off look in ta ke to get at go back to cut up take off go down with go out give away take away 1) If he says that again I’ll ____________ him ___________I swear it!(kill him) 2)We knew he wasn’t English as his accent ___________________ him____(betrayed him) 3)Let’s (go and visit) ______________________ Paul and Jan tonight. It’s been ages since we last saw them 4) Clive was really (upset) ______________________ when he failed his proficiency exam. 5)John can’t come with us tonight after all. It seems he’s (caught) _________________ a cold
Mọi người giúp mình nốt câu hỏi này ! Xin cảm ơn!
Một số tế bào đều nguyên phân 4 đợt bằng nhau. Số thoi phân bào bị hủy qua cả quá trình là 180 thoi phân bào.
a) Có bao nhiêu tế bào tham gia nguyên phân.
b) Nếu số NST chứa trong các tế bào con là 7296 thì bộ NST 2n của loài là bao nhiêu?