Cho nửa đường tròn $\left( C \right)$ đường kính $AB$ và đường thẳng $d$ . Để hình tròn xoay sinh bởi $\left( C \right)$ khi quay quanh trục $d$ là một mặt cầu thì chỉ cần thêm điều kiện:
A.$d//AB$
B.Đường kính $AB$ thuộc $d$
C.Không cần thêm điều kiện nào
D.$d\bot AB$ tại tâm $\left( C \right)$

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Rowling’s new book will be ______________ in October.
A.published
B.written
C.typed
D.broadcast

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
While a sport has spectators, television has ________
A.witnesses
B.commentators
C.viewers
D.audiences

Trong các đa diện sau, đa diện không nội tiếp mặt cầu là 
 
A.tứ diện.
B.hình chóp ngũ giác đều.
C.hình hộp chữ nhật.
D.hình chóp tứ giác bất kỳ.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Students use the library’s computers to get ______________ to the Internet.
A.success
B.access
C.assess
D.recess

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
____________________ , please paint the windows before you leave.
A.If you have enough time
B.If you’ll have enough time
C.Unless you can have enough time
D.Unless you have enough time

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The development of social networks like Facebook gives way to _______________, which is really bad for the victims.
A.business advertising
B.social networking
C.cyber bullying
D.better communication

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
"I wish this city___ so noisy." "I know. I wish we ___ in the countryside."
A.weren’t – lived
B.isn’t – live
C.wasn’t – live
D.weren’t- live

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
If the oceans­­ _____ fresh water, there_____ plenty of water to irrigate all the deserts on earth.
 
A.were / would be
B.would be / were
C.is / will be
D.had been / would have been

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
_______ he passes the final exam, he will apply for the Ho Chi Minh Technology University.
 
A.but for
B.As long as
C.Unless
D.Supposed