【名词&注释】
生殖细胞(germ cell)、染色质(chromatin)、批评家(critic)、裸子植物(gymnosperm)、现在完成时(present perfect)、花粉囊(pollen sac)
[单选题]染色质和染色体是同一物质不同阶段所表现出来的不同形态。( )
A. 正确
B. 错误
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举一反三：
[单选题]The research mentioned in the last paragraph reports that
A. people with dogs did more exercise
B. dogs lost the same weight as people did
C. dogs liked exercise much more than people did
D. people without dogs found the program unhelpful
[单选题]Up to now, the program ________ thousands of children who would otherwise have died.
A. would save
B. saves
C. had saved
D. has saved
[单选题]裸子植物的小孢子叶又可称( )。
A. 心皮
B. 花粉囊(pollen sac)
C. 花药
D. 雄蕊
[单选题]眼子菜属(如菹草)叶内的通气组织发达。( )
A. 正确
B. 错误
[单选题]某蛋白质由m条肽链、n个氨基酸组成。该蛋白质至少有氧原子的个数是
A. n-m
n-2m
n+m
n+2m
[单选题]糊粉粒贮藏的养分是( )。
A. 淀粉
B. 脂肪
C. 蛋白质
D. 核酸
[单选题]回答 68 ~ 70 题：It is true that good writers rewrite and rewrite and then rewrite some more .But in order to work up the desire to rewrite ,it is important to learn to like what you write at the early stage.I am surprised at the number of famouw writers I know who say that they so dislike reading their own writing later that they even hate to look over the publishers’ opinions .One reason we may dislike reading our own work is that we’re often disappointed that the rich ideas in our minds seem very thin and plain whern first written down .Jerry Fodor and Steven Pinker suggest that this fact may be a result of how our minds work..
A. Different from popular belief ,wen do not usually think in the works and sentences of ordinary language but in symbois for ideas (known as “mentalese”), and writing our ideas down is an act of transtation from that symbolic language .But while mentalese contains our thoughts in the form. of a complex tapestry (织锦)，writing can only be composed one thread at a time .Therefone it should not be surprising that our first attempt at expressing ideas should look so simple .It si only by repeatedly rewrting that wen producs new threads and connect them to get closer to the ideas formed in our minds.
B. When people write as if some strict critics (批评家) are looking over their shoulder , they are so worried about what this critic might say that they get stuck before they even start.Peter Elbow makes an excellent suggestion to deal with this problem .When writing wen should have two different minds .At the first stage ,we should see every idea ,as well as the words we use to express it ,as wonderful and worth putting down .It is only during rewrites that we should examine what wen excitedly wrote in the first stage and check for weaknesses .
C. 第13题：What do wen learn frome the text about those famous writers?
D. They often regret writing poor works
E. Some of them write surprisinglymuch .
F. Many of them hate reading their own works
G. They are happy to revlew the publishers’ opinions.
[单选题]下列细胞中属配子的是( )。
A. 精子
B. 花粉中的生殖细胞
C. 小孢子
D. 营养细胞
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