John Snow was a famous doctor in London, who was so expert that he attended Queen Victoria as her【小题1】(person) physician. But he was famous for【小题2】(defeat) “King Cholera”.

Cholera was a deadly disease and neither its cause 【小题3】   its cure was understood. John       wanted to face the challenge and solve the problem. He suspected that people absorbed this disease into their bodies with their meals so when another severe outbreak 【小题4】   (hit) London, he began his enquiry. By gathering information and making【小题5】(far) investigations, he found that many victims linked to the outbreak were near the water pump, so he got the handle【小题6】(remove).       Soon afterwards the disease slowed down. He drew the conclusion 【小题7】   the polluted water was   【小题8】(blame).

The water 【小题9】(company) were instructed not to expose people 【小题10】   polluted water any more. Finally “King Cholera” was defeated.

Linda is a really hard-working student, but her grades 【小题1】 (fall) since three months ago. This is because she sometimes has trouble concentrating 【小题2】her study. She also refuses 【小题3】(talk) with teachers and friends. What’s worse, she not only feels 【小题4】(tire) all the time but has difficulty in falling asleep. 【小题5】 she is going through is brought to her mother’s attention. Therefore, her mother asks her what happens to her, but she just says she feels like 【小题6】 (cry).

As a matter of fact, Linda is suffering from clinical depression (临床抑郁症). It can be described as a mood 【小题7】 is so low that it affects your daily life 【小题8】(bad). The first signs of it in teens are 【小题9】 (poor) school reports than before, learning difficulties and staying away from classmates and teachers. If you have these signs, don’t worry.

【小题10】are many effective ways, such as medicine, small talk, more exercise and a balanced diet.

Both colds and flu make you feel uncomfortable, and both of the breathing infections【小题1】(cause) by viruses. But what is the real difference between the cold【小题2】flu?

Their symptoms (症状) are similar, so it can be hard to tell which has hit you first. Finding out 【小题3】you have, though, can mean better treatment and getting better faster. Avoid the virus in the first place with these tricks that doctors use【小题4】(avoid)colds and flu.

While colds are unpleasant, they【小题5】(rare) last long and aren’t usually serious; the flu, however, is a different matter. In the 2015-16 season, flu caused 11 million medical visits, 308,000 hospital visits, and 12,000【小题6】(dead). Most people get over both a cold and the flu in【小题7】(little) than two weeks without visiting the doctor. If you’re at high risk of【小题8】(develop)serious complications (并发症) from the flu — such as anyone with heart disease or asthma (气喘) — you should visit a doctor，【小题9】can give you flu antiviral drugs. Anyone else can reduce symptoms with these natural【小题10】(cure) for cold and flu.