Music教案

   a. never have any plants or animals in them
   b. can all be turned into good land before long (不久以后)
   c. are becoming smaller and smaller
   d. get very little rain
32. small green plants are very important for dry places because ＿＿＿＿＿＿＿＿ .
   a. they don’t let the sun make the earth even drier
   b. they don’t let the wind blow the soil away
   c. they hold water
   d. all of the above.
33. land is becoming deserts little by little because ＿＿＿＿＿＿.
   a. plants can’t grow there
   b. there is not enough rain
   c. people haven’t done right things that scientists wish them to do
   d. scientists know little about the deserts
34. which is the main idea of the first paragraph？
   a. scientists know how to change desert into good land.
   b. land is becoming deserts faster than scientists can change them into good land.
   c. if scientists can bring water to desert, people can grow food there.
d. more and more places are becoming deserts all the time.
                             c
 one evening in october, dr berlin was having dinner when the phone rang. he went to answer it. it was mrs. green.
“please, dr berlin, come to my house. i had a necklace on my desk and now it is gone.”
dr berlin hurried to the green’s house. he arrived at eight o’clock. first he asked mrs. green. “when did you see the necklace last?”
“at seven o’clock, i took the necklace from my pocket and put it on the desk in my living room. then i went to wash my hair. i came back at seven thirty and the necklace was gone.”
“i see,” dr berlin said, “were you alone in the house?”
“no, my sister’s daughter, nancy, is here, too. she’s a student at the university. her parents live far away, so she lives here with me.”
“let’s talk to miss nancy,” said dr berlin. then he and mrs. green went to nancy’s room.
“please sit down.” nancy said. dr berlin sat on the only chair in the room. the chair was cold. mrs. green and nancy sat on the bed. dr berlin saw some books on the floor near his feet.
“what have you been doing this evening?” dr berlin asked.
“i came home at six thirty, and went right to my room. i’ve been studying because i have an exam tomorrow. i’ve been sitting in that chair and reading all evening. i never got up and never left the room. but at seven fifteen i heard a sound, like somebody shutting the door. i didn’t go out to look for i was too busy. maybe somebody came into the house and took my aunt’s necklace.”