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Cácbôníc
Chất dinh dưỡng
Chất hữu cơ
A.answer2
B.
C.
D.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
If he_____ to London yesterday, _____ his old friend.
A.went/would meet
B.went / would have met
C.had gone / would have met
D.go/would meet

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
_______ that problem with the car, we wouldn't have missed the speech.
 
A.Unless we had had
B.Provided that we had had
C.If we had had
D.If had we had

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
If you _________ up with new technology, you _____________ left behind at work.
 
A.didn’t keep/will be
B.don’t keep/ would be
C.don’t keep/ will be
D.kept/ will be

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
She’s out of work again! If she _____ improving her skills through lifelong learning, she _____ new ways to make herself more employable.
A.continued/ would have found
B.continued/ will find
C.had continued/ would have found
D.had continued/ would found

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
If you ____ an A as a mark for a piece of work or in an exam, your work ____ extremely good.
 
A.got/ would
B.gets/ be
C.get/ would be
D.get / is

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
If he ________how to present his ideas in his previous job, he ______ no trouble becoming a good manager.
A.had known/ would have
B.had known/would have had
C.knew/ would have
D.know/ will have

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
If you ______ the GCSE examination, you ______ not be allowed to take the entrance examination to the university.
A.failed / are
B.failed / did
C.fail / will
D.fail / would

"......... và........được vận chuyển từ rễ lên lá nhờ mạch gỗ" Từ còn thiếu là từ gì?
A.Nước, chất hữu cơ.
B.Nước và ôxi.
C.Nước, muối khoáng.
D.Chất hữu cơ, muối khoáng.

Hoa đổi màu giống màu của thuốc nhuộm là do đâu?
A.Thuốc nhuộm theo mạch gỗ lên hoa.
B.Thuốc nhuộm theo ruột lên hóa.
C.Thuốc nhuộm theo phần vỏ lên hoa.
D.Thuốc nhuộm theo mạch rây lên hoa.