Last summer， Mac Hollan， a primary school teacher， was cycling to Alaska with two friends

On the way， his friends had to stop for a bicycle repair， but they encouraged Mac to ride hey would catch up with him soon．

    Mac began to cycle alone． A few minutes later， Mac heard quick and loud breathing behind him

Man， thats a big dog! he thought， But when he looked to the side， he saw immediately that it

wasn't a dog at all， but a wolf， quickly catching up with him．

    Mac' s heart jumped． He searched and took out his can of bear spray（防熊喷雾）， With one hand

one hand on the bars， he fired the spray at the wolf． A bright red cloud enveloped the animal To Mac's relief（宽慰）， it fell back， shaking its head． A minute later， however， it was again by his side． It even attacked the back of Mac's bike tearing open his tent bag． He fired at the wolf a second

time， and again， it fell back， only to quickly restart the chase （追赶）．

    Mac was riding hard now． He waved and shouted at passing cars without slowing down．

    At that moment， Paul and Becky were driving their car on their way to Alaska． They found dog﹣like animal running alongside a man on a bike， As they got closer， they realized that"dog" was a wolf． Mac heard a large car behind him． He kept waving and shouting as the wolf was catching up closer． And the car did stop in front of him at the right time．

（1）Why did Mac ride alone？　　

A． He liked riding alone．

B． He wanted to try the bear spray．

C． His friends were repairing the bike．

D． His friends returned for their tents．

（2）How did Mac feel when he realized a wolf was after him？　　

A． Calm．

B． Frightened．

C． Excited．

D． Painful．

（3）What does the underlined word"it"in Paragraph 3refer to？　　

A． The wolf．

B． The dog．

C． The can．

D． The cloud．

（4）In the end， how did Mac ask for help？　　

A． By riding hard．

B． By using the bear spray．

C． By waving and shouting．

D． By chasing after the car．