food-to watch weather?

　　Last year，a tornado killed three of the most experienced storm chasers．It picked up and threw their car as easily as you would a piece of paper．Dozens of other chasers were hurt in the same storm．They were crowded on a few roads when the tornado suddenly expanded and ate them．Val and Amy were there that day but still，in their words，chase aggressively．

24．Why did everyone calm down after being crazy?

A．Because they reached grassland．

B．Because a tornado would come．

C．Because a trooper stopped their car．

D．Because they were cool on the trail．

25．What could show Val Cator's profession?

A．His driver's license． B．The glove box．

C．The signs painted on his truck's sides． D．The news of Oklahoma City．

26．Which word can be used to describe Val and Amy?

A．Hard-working． B．Adventurous．

C．Generous． D．Humorous．

27．The passage is mainly about______．

A．a program about storm chasers

B．the possible dangers that storm chasers face

C．the most violent tornado in the US

D．some people who want to be close to tornadoes

　　Dolphin or not a dolphin? That is the question! You see，there are several types of dolphins．Some are saltwater dolphins while others are river dolphins．

　　"What are the 32 types of dolphins?"When people are asking the question，they are actually referring to the saltwater dolphins in oceans and seas．The river dolphins living in fresh water are not included in these species．But what would be the answer in this case if we ask．"Dolphin or not a dolphin?"The answer would obviously be yes．River dolphins still belong to the dolphin family．

　　Among the 32 types of dolphins do not actually wear the word"dolphin"in their names，such as the tucuxi，while others actually have the word"whale"as part of their names even if they are not whales but in fact，belong to the dolphin family，for example，the melon-headed whale and the killer whale．So what would be the answer to the question"Dolphin or not a dolphin?"in these cases? It would be yes．All these species do belong to the dolphin family．

Another question that people ask is．"Are the sea animals that perform at aquariums all dolphins?"So，it always seems to come back to the question，"Dolphin or not a dolphin?"Well the answer is no in this case．The sea animals that perform there are not all dolphins．The beluga which people tend to think belong to the dolphin family because they show what seems like a smile，like most dolphins，are in fact a