Jonas came to the party the minute it came to an end.
A.Jonas came too late to end the party.
B.Jonas came to the party so early that it came to an end.
C.Jonas would have ended the party if he came earlier.
D.As soon as Jonas came to the party, it ended.

Tách nước butan-2-ol thu được sản phẩm chính là
A.3-metylbut-2-en.
B.but-1-en.
C.but-2-en.
D.2-metylbut-2-en.

Cho mạch điện như hình vẽ. Trong đó: \\({\\xi _1} = 20V,{\\xi _2}\\; = 32V,{r_1}\\; = 1\\Omega ,{\\rm{ }}{r_2}\\; = 0,5\\Omega ,R = 2\\Omega \\). Xác định độ lớn và chiều của cường độ dòng điện qua đoạn mạch \\(A{\\xi _1}B\\)?
A.\(4A;B \to A\)           
B.\(4A;A \to B\)
C.\(16A;B \to A\)
D.\(16A;A \to B\)

Am I nervous? Of course not. Look at my hand - it's as steady as _____.
A.a bridge
B.a rock
C.steel bars
D.a stepladder

Cho hình vẽ bên. Kết luận nào sau đây là đúng khi so sánh áp suất tại các điểm \\(A,\\,B,\\,C,\\,D?\\)
A.\({p_D} > {p_C} > {p_B}\)  và  \({p_B} = {p_A}.\)
B.\({p_D} < {p_C} < {p_B}\) và  \({p_B} = {p_A}.\)
C.\({p_D} < {p_C} < {p_B} < {p_A}.\)
D.\({p_D} > {p_C} > {p_B} > {p_A}.\)

Tom said: “I have already had breakfast, so I am not hungry”.
A.Tom said he had already had breakfast, so he is not hungry.
B.Tom said he has already had breakfast, so he is not hungry.
C.Tom said he had already had breakfast, so he was not hungry.
D.Tom said he has already had breakfast, so he was not hungry.

Số liên kết cao năng có trong 1 phân tử ATP là
A.3 liên kết
B.2 liên kết
C.4 liên kết
D.1 liên kết

By the end of last year, George _______ English for two years.
A.have learned
B.learn
C.has learned
D.had been learning

Cho dãy số \(\left( {{u_n}} \right)\) xác định bởi \({u_1} = 2\) và \({u_n} = \dfrac{{{u_{n - 1}}}}{{{u_{n - 1}} + 3}}\,\,\left( {n \ge 2} \right)\). Tìm công thức SHTQ của \(\left( {{u_n}} \right)\). 
A.\({u_n} = \dfrac{2}{{2n - 1}}\)
B.\({u_n} = \dfrac{1}{{2n - 1}}\)
C.\({u_n} = \dfrac{2}{{n - 1}}\)
D.\({u_n} = \dfrac{1}{{n - 1}}\)

It turned out that we ____ rushed to the airport as the plane was delayed by several hours.
A.hadn’t
B.should have
C.mustn’t
D.needn't have