a．cycling around the town
b．developing a waste ground
c．repairing cycles
d．buying empty shops
29.boris finally chose an empty shop on a new estate because ________.
a．it was not so expensive
b．he had a lot of old customers there
c．he could make good use of his skills there
d．there were good opportunities there
30.we can infer from the last paragraph that boris ________.
a．still couldn’t make good profits
b．set off in a successful career
c．found a lot of gold coins by accident
d．had great difficulty running his business
b
this valentine’s day, millions of people will exchange heart-shaped gifts of all kinds, from candy to cards. but did you know that the human heart does not actually look like the typical valentine shape?
according to heart specialist dr. robert dibianco, we can learn more about this important organ. “the human heart is about the size of a fist. because the heart is a muscle with lots of blood supplied to it, it looks red like meat,” he explained. “in people who are overweight, the heart looks yellow because it is covered with yellow fat.”
in the united states, children are taught to place their hands over their hearts when pledging allegiance to the flag. most people have heard that the heart is on the left side of the chest. in reality, the heart is in the middle of the chest, tucked snugly between the two lungs.
and what does the heart actually do? dibianco explained that the heart is a pump
