Máy móc đầu tiên xuất hiện ở

A. Anh

B. Mĩ

C. Đức

D. Pháp

Bất phương tình 3 x + 5 2 − 1 ≤ x + 2 3 + x  có nghiệm là

A. Vô nghiệm

B. x ≥ 4,11

C. Vô số nghiệm

D. x ≤ -5

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

Although he was very tired, he agreed to help me cook dinner

A. Tired as he was, he agreed to help me with my cook

B. He agreed to help me cook dinner, so he got tired

C. He was too tired to help me cook dinner

D. I wanted him to help me cook dinner as I was tired