Read the following sign or notice and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. What does the sign mean?

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

What does the sign mean?

These falling objects are in danger.

You may be endangered due to falling objects.

You should stay alert to falling objects.

You should look up to falling objects here.

Giải thích

Đáp án đúng: C

Dịch nghĩa: Bạn nên cảnh giác đến những vật rơi.