2.8对第二、三段谈到的人体中“单独的小生命”的有关理解,不正确的一项是( )
A. “线粒体”是远古“入侵者”的后代,它们驱动细胞,启动我们的行为。
B. “线粒体”与我们的机体保持良好的共生关系,足个可信赖的“寓客”。
C. 作者认为我们每个细胞都可能是个复杂的生命系统,会有许多“小东西”。
D. 作者想象许多“小东西”默默无闻地为我们工作,只有奉献,没有自由。
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1.14 ()students are there in your school, Tom?
A. How far
B. How many
C. Howlong
D. How often
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2.35.
A. called
B. armed
C. chosen
D. recognized
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1.18 Don’t throw that cloth away; and you’ll find a ()for it one day.
A. waste
B. bed
C. dress
D. use
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1.19 We’d like to know the reason ()she didn’t accept the job.
A. what
B. which
C. why
D. when
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1.23.
A. looked
B. sat
C. travelled
D. lived
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4.15There’s plenty of time, so you ()worry about it.
A. needn’t
B. couldn’t
C. mustn’t
D. wouldn’t
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3.23.
A. caused
B. fought
C. caught
D. treated
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5.34.
A. room
B. home
C. house
D. Glenns’
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4.7Before Tom got to the cinema, the film .
A. had begun
B. will begin
C. has begun
D. begins
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