Answer:
I think is D.
Explanation:I say D because it just doesnt sound right.
No, it's not. Gymnastics is a sport but cheerleading is just jumping and flipping. There's no way to win, it's not a game. And you barely make any money from doing it.
The answer is D. scientists have spent years tryingto determine how tsunamis can be predicted with greater accuracy
Answer:
B. The walker will not get tired as fast.
Explanation:
Based on the given passage, it is narrated that new electric backpacks which could be used as generating sets to power up electrical appliances were available and the up and down movement of the backpack acted as the generator.
From paragraph 4 of the given passage, it is said that the up and down motion reduces the weight of the pack.
Therefore, the detail that should be added to it is that the walker will not get tired as fast.
