Choose one sentence that has the same meaning to the root one:
They are not allowed to go out in the evening by their parents.
A. Their parents do not want them to go out in the evening.
B. Their parents never let them to go out in the evening.
C. Going out in the evening is permitted by their parents.
D. Although their parents do not allow, they still go out in the evening.

Choose one sentence that has the same meaning as the root one:
My daughter is looking forward to seeing her friend.
A. My daughter is expecting to see her friend.
B. My daughter is being looked after while her friend is abroad.
C. My daughter feels bored because she is going to see her friend soon.
D. My daughter does not want to see her friend again.

Choose one sentence that has the closest meaning to the root one:
John speaks Chinese fluently because he used to live in China for ten years.
A. Suppose John has lived in China for ten years, he can speak Chinese fluently.
B. Provided that John lived in China for ten years, he could speak Chinese fluently.
C. Unless John had lived in China for ten years, he could not have spoken Chinese fluently.
D. John could not speak Chinese fluently if he had not lived in China for ten years.

Choose one sentence that has the same meaning to the root one:
He last had his eyes tested ten months ago.
A. He had tested his eyes ten months before.
B. He had not tested his eyes for ten months then.
C. He had not had his eyes tested for ten months.
D. He didn’t have any tests on his eyes in ten months.

Choose one sentence that has the closest meaning to the root one:
I will take up golf this year.
A. I will begin to play golf this year. 
B. I will stop playing golf this year.
C. I will build a golf court this year. 
D. I will enter a golf competition this year.

Choose one sentence that has the same meaning as the root one:
Despite his inexperience in the field, John applied for the job.
A. John was unable to do the job because he was inexperienced.
B. John applied for the job because he has experience in the field.
C. John did not apply for the job because of his inexperience in the field.
D. John applied for the job even though he has no experience in the field.

Choose one sentence that has the same meaning as the root one:
He was accused of stealing a thousand pounds from his employer.
A. They accused him of stealing a thousand pounds from his boss.
B. They charged him with robbing his employer at court.
C. Stealing a thousand pounds made him accused of dishonesty.
D. Stealing a thousand pounds from his employer was known by other employees.

Choose one sentence that has the closest meaning to the root one:
Peter said if he were me he would stop smoking.
A. I wanted Peter to stop smoking and he promised to do.
B. Peter promised to stop smoking.
C. Peter said he would stop smoking as I wanted him to.
D. Peter advised me to stop smoking.

Cho ∆ABC và mặt phẳng (P). Biết góc giữa mặt phẳng (P) và mặt phẳng (ABC) là φ , hình chiếu của ∆ABC trên mặt phẳng (P) là ∆A'B'C' . Hệ thức liên hệ giữa diện tích ∆ABC và diện tích ∆A'B'C' là
A. SA'B'C'=SABC.sinφ.
B. SA'B'C'=SABC.tanφ.
C. SA'B'C'=SABC.cosφ.
D. SA'B'C'=SABC.cotφ.

Khoảng cách giữa hai cạnh đối trong một tứ diện đều cạnh a bằng:
A.     
B.  
C.  
D.  2a