题目内容：

This spring, the town of Oso saw twice the usual rainfall. When the sun finally shone, LoAnna and Kris's three older kids ran outside. Inside, LoAnna nursed their four-month-old Kristian. Suddenly LoAnna heard a loud noise. She rushed outside in time to see a half-mile-wide mud and sand thundering down the hill toward them, knocking over hundreds of trees.

Mudslide(泥流)!

LoAnna gathered everyone into the bedroom farthest from the falling hill side and waited.

Kris got a call from LoAnna, He hurriedly drove home.

Highway 530 was covered with thick sand, fallen trees. Kris had to run home.

The mud came up to his knees. Suddenly he heard a woman screaming for help. He pulled through mud, over pieces of houses to the source of the cries.

At first, he saw an arm reaching up through the debris. There, a woman, buried under pieces of walls. furniture, and trees. was holding a baby. Finally, he freed the baby. By this time, other citizens had come.

After saving the woman, Kris moved on. He was still a mile from home. Ahead lay two fallen houses. He heard a moan. Stepping toward the house, Kris nearly killed himself in the mud. An older man was trapped in house debris. He was twice Kriss weight. He'd have to wait for more help.

Just then, Kris heard another man moaning from the second house. Kris pulled away some pieces of the house, but the man was buried too deeply for him.

Hearing helicopter(直升飞机) on the roof, Kris climbed up, met a member of the search-and-rescue team and led him to the first man. Then he headed back and kept digging until he could turn the second man over. After the rest of the team arrived, Kris moved on to find his family.

Kris finally reached home. It was flooded, but the mud had stopped just shy of the house. His truck was gone, as were LoAnna and the others. He checked cars and houses nearby for survivors, then ran to the command center.

Not long after he arrived, he saw his truck coming down the road. LoAnna jumped out.

Kris was praised by the Red Cross for his heroics.

1.The purpose of the first two paragraphs is to       .

A. create an unusual setting of the story

B. introduce the central idea of the story

C. describe a turning point of the story

D. review the main character of the story

2.Which of the following is the correct order of the story?

a. Kris found a man buried too deeply for him.

b. Kris heard a woman screaming for help.

c. Kris led a rescue member to save the older man.

d. Kris found LoAnna, kids and his truck gone.

e. Kris was nearly killed in the mud.

A. beacd    B. badec    C. aecbd    D. aedbc

3.Which of the following sentences is TRUE?

A. Kris saved three persons in all.

B. Kris saved the baby by himself.

C. Kris pulled the first man out of mud.

D. Kris found some survivors near his house.

4.Which sentence best shows the central theme in the text?

A. Kris got a call from LoAnna.

B. He was still a mile from home.

C. He saw his truck coming down the road.

D. Kris was praised by the Red Cross for his heroics.