单项选择题
A．he can see the difference between red and deep red B．he can see the difference between blue and green C．he can’t tell the difference between orange and green D．he thinks green is the same as blue
A．a popular TV reporter B．a TV reporter few people know C．a TV reporter ordinary people don’t like D．an unknown TV reporter
A．Colds are always very dangerous. B．Colds are often unpleasant though not dangerous. C．Actually nothing can help get rid of colds. D．The best way to keep colds away is to be healthy.