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【单选题】
关于端粒,说法不正确的是( )。
A.
是染色体末端的DNA序列，随细胞的每一次复制而逐渐缩短
B.
端粒酶可以使缩短的端粒长度恢复
C.
大概复制50次之后，缩短的端粒使染色体相互融合，导致细胞死亡
D.
生殖细胞和大多数体细胞都具有端粒酶活性
E.
多数恶性肿瘤细胞含有端粒酶活性
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举一反三
【单选题】According to the passage, seeing and perceiving are______.
A.
the same action going on in our minds
B.
two separate actions going on in different organs
C.
two actions carried on both by the eyes
D.
several actions that take place at different time
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A.
碎米荠
B.
山茶
C.
玫瑰茄
D.
荠菜
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【简答题】The passage mainly discusses ______ for businesses going international.
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【单选题】It can be inferred from the passage that ______.
A.
the human nose is the most important organ
B.
man's nose has been the source of human imagination
C.
a perfect individual would seldom feel proud, lose temper or envy others
D.
not until recently did man link his nose with the expression of his emotions
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【单选题】This passage is mainly about the benefits of developing robots and how people are going to get used to living with robots in their office and home.
A.
Y
B.
N
C.
NG
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【简答题】Passage 42 Going Organic.mp3:
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【单选题】According to the passage, the chief purpose of explorers in going to unknown places in the past was ______.
A.
to display their country's military might
B.
to accomplish some significant science
C.
to find new areas for colonization
D.
to pursue commercial and state interests
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【单选题】描述炎性浸润期压疮,下列哪项不正确
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水泡表皮剥脱，露出湿润创面
B.
发下硬结
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有大、水水疱
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皮肤呈紫色
E.
创面上有脓性分泌物
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【简答题】描述炎性浸润期压疮，下列哪项不正确（ ）
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【简答题】某单位领导与刚来的客商正在会客厅里寒暄,秘书前来泡茶。他用手指从茶叶筒中拈了撮茶叶,放入茶杯内,然后冲上水......这一切,领导和客商都看到了。领导狠狠地瞪了秘书一眼,但碍于客商在场而不便发作。客商则面带不悦之色,把放在自己面前的茶杯推得远远的,同时说:“别污染了我的肠胃!”领导知道自己属下做事欠妥,所以只得忍气吞声。 谈判时,双方讨价还价。领导一时动怒,与客商发生争执。秘书觉得自己作为单位的一...
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【单选题】According to the passage, seeing and perceiving are______.
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【单选题】According to the passage, the chief purpose of explorers in going to unknown places in the past was ______.
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水泡表皮剥脱，露出湿润创面
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【简答题】某单位领导与刚来的客商正在会客厅里寒暄,秘书前来泡茶。他用手指从茶叶筒中拈了撮茶叶,放入茶杯内,然后冲上水......这一切,领导和客商都看到了。领导狠狠地瞪了秘书一眼,但碍于客商在场而不便发作。客商则面带不悦之色,把放在自己面前的茶杯推得远远的,同时说:“别污染了我的肠胃!”领导知道自己属下做事欠妥,所以只得忍气吞声。 谈判时,双方讨价还价。领导一时动怒,与客商发生争执。秘书觉得自己作为单位的一...
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