What does the passage mainly discuss?

A. The advantages and disadvantages of delivery drones.

B. The original use of drones.

C. Ways to deliver products during the COVID-19 pandemic.

D. Challenges of using drones in modern logistics.

Đáp án
A. The advantages and disadvantages of delivery drones.

Câu hỏi thuộc Bài tập:

FRIENDS PLUS 9 - ĐỀ KT THAM KHẢO - UNIT 3 – PRACTICE TEST 1