No they couldn't.
Nor could a human-size flea. Muscle strength scales as the square of the body size; but body weight scales as the cube of the body size. So increase the length of a flea 100 times, and its weight would increase a million times, while its strength would increase just 10,000 times.
In physics class in high school we looked at whether the big dinsaurs could even stand up on their stumpy legs.