【名词&注释】
细胞膜(membrane)、重要作用(an important role)、生活史(life history)、雄配子体(male gametophyte)、雌配子体(female gametophyte)、孢子体(sporophyte)、有选择性(has a selective)、天南星科(araceae)、植物体(plants)、空白处
[单选题]多管藻(真红藻亚纲)的生活史中有三种植物体(plants)交替出现，它们是( )。
A. 茎叶体、丝状体、叶状体
B. 孢子体、配子体、果孢子体
C. 配子体、雌配子体、雄配子体
D. 孢子体、雌配子体、雄配子体
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举一反三：
[单选题]How did the acidcent happen ?
A. a longhit a car
B. a car ran into a lorry
C. a bank clerk rushed into the street .
[单选题]天南星科(araceae)许多植物有块茎，块茎常入药或食用。( )
A. 正确
B. 错误
[单选题]细胞膜在细胞的生命活动中具有重要作用。下列相关叙述不正确的是
A. 细胞膜的糖被在细胞间具有识别作用
B. 细胞膜对膜两侧物质的进出具有选择性(has a selective)
C. 细胞膜内外两侧结合的蛋白质种类有差异
D. 载体蛋白是镶在细胞膜内外表面的蛋白质
[单选题]
A. Holding
B. Handing
C. Sending
D. Leaving
[多选题]第二节(共5小题；每小题2分，共10分)根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
A. Muzak
B. The next time you go into a bank, a store, or a supermarket, stop and listen. What do you hear? 71 It's similar to the music you listen to, but it's not exactly the same. That's because this music was especially designed to relax you, or to give you extra energy. Sometimes you don't even realize the music is playing, but you react to the music anyway.
C. Quiet background music used to be called "elevator (电梯) music" because we often heard it in elevators. But lately we hear it in more and more places, and it has a new name "Muzak". About one-third of the people in America listen to "Muzak" everyday. The music plays for 15 minutes at a time, with short pauses in between. It is always more lively between ten and eleven in the morning, and between three and four in the afternoon, when people are more tired. 72
D. If you listen to Muzak carefully, you will probably recognize the names of many of the songs. Some musicians or songwriters don't want their songs to be used as Muzak, but others are happy when their songs are chosen. Why? 73
E. Music is often played in public places because it is designed to make people feel less lonely when they are in an airport or a hotel. It has been proven that Muzak doeswhat it is designed to do. Tired office workers suddenly have more energy when they hear the pleasant sound of Muzak in the background. 74 Supermarket shoppers buy 38 percent more groceries.
F. 75 . They say it's boring to hear the same songs all the time. But other people enjoy hearing Muzak in public places. They say it helps them relax and feel calm. One way or another, Muzak affects everyone. Some farmers even say their cows give more milk when they hear Muzak!
G. Some people don't like Muzak.
H. The music gives them extra energy.
I. Music is playing in the background.
J. Factory workers produce 13 percent more.
K. Muzak tends to help people understand music better.
L. F. They get as much as $4 million a year if their songs are used.
M. G. Muzak is played in most of the big supermarkets in the world.
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