Teenagers ________ their health because they often expose themselves to so many electric products.
| A．have damaged | B．damage | C．are damaging | D．will damage |
In hi
s spare time, he often listens to music or watches TV to himself.
| A．encourage | B．entertain | C．educate | D．direct |
—Mary is very clear and studies very hard.
— she stands out in almost all her subjects that she learns.
| A．No doubt | B．No problem | C．No way | D．No wonder |
To the surprise of many people, in ten years the city’s population by 12%.
| A．gained | B．expanded | C．developed | D．spread |
Obviously, the book is for children aged between three and six.
| A．defended | B．supported | C．convinced | D．intended |
There is a(n) of 200 yuan for the person who returns the lost necklace to its owner.
| A．reward | B．prize | C．award | D．praise |