Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

We all know that (A)we have to work hardly(B) to earn a living ourselves and support (C)the family.

A. that 

B. hardly

C. ourselves and support

D. family

Phát biểu sai là

A. Stiren làm mất màu dung dịch brom

B. Phenol tác dụng được với Na và dung dịch NaOH

C. Đốt cháy hoàn toàn ancol etylic thu được số mol CO₂ bằng số mol H₂O

D. Dung dịch glucozơ hòa tan được Cu(OH)₂ ở nhiệt độ thường

để bày tỏ tấm lòng của nghĩa quân Lam Sơn, muốn đất nước hòa bình, ko còn phải chiến tranh triền miên giữa 2 nước, muốn thiết lập mối quan hệ bền vững giữa nước Đại Việt và Trung Quốc. Qua đó thể hiện lòng nhân đạo của nhân dân ta tha cho Vương Thông về nước để 2 nước đều có lợi: VT đc về nước an toàn, ko kéo quân lại 1 lần nữa sang đánh nước ta nx.

You should have made your children do housework as soon as they were able to do so.

A. It was essential to make your children do housework as soon as they were able to do so but you didn't. 

B. You didn’t make your children do housework as they were able to do so 

C. You should make your children do housework as soon as they are able to do so 

D. You made your children do housework but they weren’t able to do so.

Các polime: polietilen, xenlulozơ, polipeptit, tinh bột, nilon-6, nilon-6,6, polibutađien. Dãy các polime tổng hợp là

A. Polietilen, xenlulozơ, nilon-6, nilon-6,6

B. Polietilen, nilon-6, nilon-6,6, polibutadien

C. Polietilen, tinh bột, nilon-6, nilon-6,6

D. Polietilen, xenlulozơ, nilon-6,6

Chọn câu trả lới đúng trong các câu sau đây:

Dung dịch chất điện li dẫn được điện là do:

A. Sự dịch chuyển của các electron.

B. Sự dịch chuyển của các cation.

C. Sự dịch chuyển của các phân tử hoà tan.

D. Sự dịch chuyển của cả cation và anion.

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.

"Did you see that?" Joe said to his friend Bill. "You're a great shooter!"

Bill caught the basketball and bounced it before throwing it again. The ball flew into the net.

"Bill, you never miss!" Joe said admiringly.

"Unless I'm in a real game," Bill complained. "Then I miss all the time."

Joe knew that Bill was right. Bill performed much better when he was having fun with Joe in the school yard than he did when he was playing for the school team in front of a large crowd.

"Maybe you just need to practice more," Joe suggested.

"But I practice all the time with you!" Bill objected. He shook his head. "I just can't play well when people are watching me."

"You play well when I'm watching," Joe pointed out.

"That's because I've known you since we were five years old," Bill said with a smile. "I'm just not comfortable playing when other people are around."

Joe nodded and understood, but he also had an idea.

The next day Joe and Bill met in the school yard again to practice. After a few minutes, Joe excused himself.

"Practice without me," Joe said to his friend. "I'll be back in a minute."

Joe hurried through the school building, gathering together whomever he could find—two students, a math teacher, two secretaries, and a janitor. When Joe explained why he needed them, everyone was happy to help.

Joe reminded the group to stay quiet as they all went toward the school's basketball court. As Joe had hoped, Bill was still practicing basketball. He made five baskets in a row without noticing the silent people standing behind him.

"Hey, Bill!" Joe called out finally.

Bill turned. A look of surprise came over his face.

"I just wanted to show you that you could play well with people watching you," Joe said. "Now you'll have nothing to worry about for the next game!"

Why does Bill play well when Joe is watching him?

A. He is comfortable with Joe

B. Joe tells him how to play better

C. He does not know that Joe is there

D. He wants to prove to Joe that he is a good player

Số este ứng với công thức C₅H₁₀O₂ có khả năng tham gia phản ứng tráng bạc là

A. 1

B. 3

C. 2

D. 4

cz thu được hai sản phẩm hữu cơ đều không làm nhạt màu nước brom. Số đồng phân của este X thỏa mãn điều kiện là

A. 4.

B. 1

C. 2.

D. 3