单项选择题
A．the production of new industrial goods B．increased amounts of natural substance C．our ever-increasing population D．the release of artificial of natural substances into the environment
People can help solve the problem of pollution by （）A．u...
单项选择题People can help solve the problem of pollution by （）
A．urging their governments to control litter and waste B．cutting down the use of oil and other oil products C．reducing unnecessary buying, over-consumption and careless disposal of wastes D．Making anti-pollution advertisements
For the second time, the man's head was hit by （）A．the ...
单项选择题For the second time, the man's head was hit by （）
A．the box of bricks B．the ladder C．the top of the buliding D．the pulley
The box of bricks hit the man because （）A．the box of br...
单项选择题The box of bricks hit the man because （）
A．the box of bricks was heavier than him B．the box of bricks was lighter than him C．the box of bricks came down too fast D．the man was too careless
