31. Science and technology have ………the life safe, secure and comfortable.
A. transformed B. made C. done D. changed
32. The teacher __ me I had better devote more time to science subjects such as physics, chemistry, and biology. A. said B. talked C. spoke D. told
33. Science is used in all corners of the world for the __________ of people.
A. interest B. need C. profits D. benefit
Giúp vs ạ
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