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【单选题】
若把直角坐标系中的双曲线 向上平移2个单位，那么会出现 [     ]
A.
与x轴的交点为（-1，0），与y轴没有交点
B.
与x轴的交点为（-1，0），与y轴有交点
C.
在y轴左侧，y随x增大而增大
D.
四个象限均有双曲线的某一部分
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【单选题】Biologists have discovered certain genes (the basic unit of genetic material found on the chromosomes) that behave very differently depending on whether they are passed down to offspring from the fath...
A.
When a mouse was genetically engineered so that it contained two copies of every gene from its mother only, the embryo was unable to develop.
B.
Research in animals that lay eggs has never turned up an imprinted gene.
C.
Imprinted genes have been found in plants, which have no placentas.
D.
Research has shown that imprinted genes have not evolved rapidly as they usually do in competitive situations.
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【单选题】Please pay attention to your spelling,  you've dropped _____ 'd' in the word 'Wednesday'. [     ]
A.
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【单选题】Genetic Engineering Genetic engineering began when the DNA molecule (分子), the most basic unit of life, was first described in 1953 by James Watson and Francis Crick. An understanding of DNA led to the...
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【简答题】Please preview the new words and phrases in Text A of Unit 1, write the correct word according to the following English explanation: 请大家预习 Unit1 A 课文中的新单词和短语,根据下面的英文释义写出对应的词和短语。 the most basic part of...
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【简答题】May I have you attention please? I have a little things to tell you. When you have a class here in the language lab, please be here a little early. Change your shoes before enter the lab. Don't bring ...
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【判断题】影响婴幼儿心理健康的因素有生理因素(遗传、胎内环境、后天的脑损伤或疾病、生理发育迟缓),心理因素(气质与性格、需要与动力、情绪、自我意识),社会因素(家庭、学前教育机构、社会生活环境)。
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【单选题】Biologists have discovered certain genes (the basic unit of genetic material found on the chromosomes) that behave very differently depending on whether they are passed down to offspring from the fath...
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【单选题】The most basic unit of data on a computer is the _______.
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【单选题】Attention, please! There _________a basketball game between our class and Class 5.
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【单选题】Please pay attention to your spelling,  you've dropped _____ 'd' in the word 'Wednesday'. [     ]
A.
an
B.
the
C.
a
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【单选题】Genetic Engineering Genetic engineering began when the DNA molecule (分子), the most basic unit of life, was first described in 1953 by James Watson and Francis Crick. An understanding of DNA led to the...
A.
the effects of altering cells
B.
the human growth hormone
C.
insulin resistance
D.
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【简答题】Please preview the new words and phrases in Text A of Unit 1, write the correct word according to the following English explanation: 请大家预习 Unit1 A 课文中的新单词和短语,根据下面的英文释义写出对应的词和短语。 the most basic part of...
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