Sự thụ tinh chỉ xảy ra trong trường hợp nào sau đây?
A.Khi trứng kết hợp với tinh trùng để tạo thành hợp tử.
B.Khi hợp tử nguyên phân để tạo phôi.
C.Khi trứng chưa thụ tinh bám được vào thành tử cung.
D.Khi trứng đã thụ tinh bám được và làm tổ trong lớp niêm mạc tử cung.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Irish people _______ in Great Britain have the right to vote in British elections.
A.lived
B.to live
C.lives
D.living

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Some of the guests _______ to the 2014 Hue Festival couldn’t come as scheduled.
 
A.to invite
B.invited
C.invites
D.inviting

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Do you know the students _______ mark 10 yesterday?
A.to get
B.got
C.get
D.getting

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The Japanese Bridge _______ in the early 1600s became a main tourist attraction in Hoi An.
A.builds
B.build
C.built
D.building

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Peter was the last person _______ Laura when she was still in London.
A.to see
B.had saw
C.sees
D.saw

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
_______ River Thames flows through London, _______ capital of the UK.
 
A.The / a
B.The / the
C.A / a
D.Ø / Ø

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The books _______ by J.K. Rowling are fascinating to me.
A.have written
B.write
C.wrote
D.written

Trong các kim loại sau đây, kim loại có tính khử yếu nhất là
A.Al.
B.Cu.
C.Fe.
D.Ag.

Dãy cation kim loại được xếp theo chiều tăng dần tính oxi hoá từ trái sang phải là
A. $ M{{g}^{2+}},F{{e}^{2+}},C{{u}^{2+}}. $
B. $ C{{u}^{2+}},M{{g}^{2+}},F{{e}^{2+}}. $
C. $ M{{g}^{2+}},C{{u}^{2+}},F{{e}^{2+}}. $
D. $ F{{e}^{2+}}_{,}C{{u}^{2+}},M{{g}^{2+}}. $