15．
When a storm is coming，most people leave the area as quickly as possible and head for safety．However there are a few people who will get into their cars and go straight for the center of the storm．These people are willing to risk being killed by floods*or 100-kilometer-an-hour winds for the excitement of watching the storm close up．
"Storm chasing*"is becoming a popular hobby，especially in the Midwest of the United States，where there are frequent storms between March and July．A storm chaser begins the day by checking the Internet for the latest weather reports，and then drives up to 1，000kilometers to where the storm will be and waits for it to develop．
Although anyone can do it，storm chasing is extremely dangerous．The power of a big storm can throw a cow into the air or destroy a whole house in seconds．Storm chasers are also often hurt in accidents caused by driving in a heavy rain．If you are a beginner，it is much safer to join a group for storm-chasing vacations during the storm season．
Even then，storm chasing is not all adventure and excitement．"Storm chasing is 95% driving，"says Daniel Lynch，who spends most of his summer storm-chasing．"Sometimes you can sit around for hours waiting for something to happen，and all you get is blue sky and a few light showers．"
However，for storm chasers，it is all worth it．"When you get close to a storm，it is the most exciting sight you will ever see in your life，"says Jasper Morley．"Every storm is an example of the power of nature．It is the greatest show on earth．"
29．In the Midwest of the United States，storms usually comeB．
A．between January and March
B．between March and July
C．between July and October
D．between August and September
30．For storm chasing，the first thing storm chasers do is toD．
A．head straight for the center of the storm
B．get into the car for safety
C．wait patiently for the storm to develop
D．collect information about a coming storm
31．Beginners of storm chasing are advisedC．
A．not to drive in a heavy rain
B．not to get too close to a storm
C．to join a group for storm-chasing vacations
D．to spend more time on storm chasing in summer
32．What can we learn from the text？C
A．Many storm chasers get killed in the storms．
B．Storm chasing is only fit for young people．
C．Storm chasers think storm chasing is worth hours of waiting
D．Storm chasing is very safe and anyone can waits for it to develop．
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