【名词&注释】
光合作用、减数分裂(meiosis)、花粉母细胞(pollen mother cell)、蕨类植物(pteridophyte)、禾本科(gramineae)、孢子体和配子体、孢原细胞(archesporial cell)
[单选题]禾本科和莎草科的区别之一为( )。
A. 有小穗
B. 花被退化
C. 具颖状苞片
D. 果实
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举一反三：
[单选题]EEvery day we experiencc one of the wonders of the world around us without even realizing it It is not the amszing complexity of television. Nor the impressive tcchnology of transport The universal wonder we share and
A. Experience is our ability to make noises with our mouths, and so transmit ideas and thoughts to each other’s minds. This ability comes so naturally that tend to forget what a miracle（奇迹）it is.
B. Obviously, the ability to talk is something that marks humans off from animals. Of course, some animals have powers just as amazing. Birds can fly thousands of miles by observing positions of the stars in the sky in relation to the time of day and year. In Nature’s went show, humans are a species of animal that have deve pod their own special act. If we reduce it to basie ferms, it’s a ability for communicating information to ther by varying sounds we make as we breathe out.
C. Not the to don’t have other powers of communication. Our facia. expressions convey our emotions, such as anger, or jout or disappointment. The way we hold our beads can indicate to others whether we are happy or sad. This is so-called “body language”. Bristling(直立的)fur is an unmistakable warning of attack among many animals. Similarly, the bowed bead or drooping tail shows a readiness to take second place in any animal gathering.
D. Such a means of communication is a basic mechanism that animals, including human beings, instinctively acquire and display. Is the ability to speak just another sort of instinct? If so, how did human beings acquire this amazing skill? Biologists can readily indicate that particular area of our brain where speech mechanisms function, but this doesn’t tell us how that part of our bodies originated in our biological history.
E. 72.According to the passage, the wonder we take for granted is____ .
F. our ability to use language
G. the mintle of technalay
H. the miaole power of nature
I. our canlity to make noises with mouth
[单选题]蕨类植物的孢子体和配子体都能进行光合作用，能独立生活。( )
A. 正确
B. 错误
[单选题]谚语“苗多欺草，草多欺苗”反映的种间关系是
A. 竞争
B. 共生
C. 寄生
D. 捕食
[单选题]What does the author think of the parties in London?
A. A bit ummul
B. FUllof tricks.
C. Less cosdy.
D. Move interesging.
[单选题]减数分裂发生在( )的过程中。
A. 花粉母细胞一小孢子
B. 造孢细胞一花粉母细胞
C. 孢原细胞(archesporial cell)一造孢细胞
D. 造孢细胞一小孢子
[单选题]Amy joined a painting group but didn’t seem to _______, so she left.
A. show off
B. go up
C. fit in
D. come over
[单选题]When did the accident happen?
A. At about 8:00 am.
B. At about 9:00 am.
C. At about 10:00 am.
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