Trắc nghiệm Chuyên đề 3: Multiple choice (vocabulary and grammar) có đáp án

Aircraft flying in arcs create microgravity for tests and simulations that last 20-25 seconds.

282/404

Aircraft flying in                     arcs create microgravity for tests and simulations that last 20-25 seconds.

straight

oval

circular

parabolic

Giải thích

Chọn đáp án D