必修五Unit 5 First aid Using language课时作业

第一节(共12小题;每小题2. 5分, 满分30分)

　　阅读下列短文, 从每题所给的A、B、C和D四个选项中, 选出最佳选项。

　　Barbara Morgan's life-long dream has always been to travel into space. On August 8, 2007, her wish came true. The former teacher was one of seven crewmembers on the Space Shuttle (航天飞机)Endeavour, which flew into space from NASA's Kennedy Space Station in Florida.

　　Morgan taught at a primary school in Boise from 1975 to 1998-with some time off for astronaut (宇航员)training. In 1985, she was chosen as a backup for Christa McAuliffe, who was to be the first teacher in space. On January 28, 1986, the Space Shuttle Challenger exploded(爆炸)just 73 seconds after take-off killing McAuliffe and the other six crewmembers.

　　After the Challenger accident, Morgan continued to teach. In 1998, she was asked to become an astronaut. Morgan's mission aboard Endeavour includes overseeing the move of 5, 000 pounds of goods from the shuttle to the International Space Station and operating the shuttle's robotic arm.

　　Morgan gave students an unusual class after she was in space. Morgan's out-of-this-world class was broadcast live on NASA television. Her husband Clay Morgan said he couldn't help but smile as he watched her talk to students. "I'm just so proud of her and how she's going to do all this and do the work of an astronaut as well as a teacher, " he said. "She just kept telling me how unbelievable it was to be in space and I think it's much better than she expected. " One student asked Morgan how being a teacher compared to being an astronaut. "We explore, we discover and we share, " she said. "The great thing about being a teacher is that you get to do things with students, and the great thing about being an astronaut is that you get to do them in space;these are both wonderful jobs. "

　　The 25 minutes question-and-answer meeting also included the astronauts entertaining(使欢乐)students by swallowing floating juice bubbles and playing with ping-pong balls.

1. The underlined word in the second paragraph most probably means "　　　".

A. someone as a replacement

B. someone as a volunteer

C. someone as a teacher

D. someone as a supporter

答案:A

解析:词义猜测题。从下文可知, 1986年1月28日"挑战者号"航天飞机在起飞73秒后爆炸, 使得前飞行员兼教师克里斯塔·麦考利芙和其他六名机组人员全部