A child should never work to support his family or go to workinstead of school.
Passive smoking is the third preventable cause of death after activesmoking and alcohol-related smoking.
The traditional system of accepting students purely on the basis oftheir grades needs to be reevaluated.
Despite a new advertising campaign, they were suffering from fallingsales.
Teenagers now prefer spending time with the TV set or the computerrather than with their friends.
This dependence on motor vehicles has given rise to major problems,including environmental pollution, depletion of oil resources, trafficcongestion and safety.
When students are weary from study and want the chance to relax andenjoy themselves with friends, they can participate in a number of recreationaland activities.
Clearly, certain diseases are beating a retreat in a face of medicaladvances.
With domestic and agricultural demands also increasing, the capacityof water supply systems is under growing strain.
Some Russian scientists claim that children learn better after beingexposed to ultraviolet light.
The chart gives information about post-school qualifications interms of the different levels of further education reached by men and women inAustralia in 1999.
The invention of rockets is linked inextricably with the inventionof “black powder”.
Part of the changing social situation in China can also beattributed to the lack of interest young people have in pursuing these kinds ofactivities.
Many characteristics, such as height and intelligence, result notfrom the action of genes alone, but from subtle interactions between genes andthe environment.
Boxing matches were very popular in England two hundred years ago.
Since then, there have been huge developments in rocket technology.
International trade is growing at a startling pace.
We hope it will have stopped raining before we set off for thepicnic.