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【简答题】
组成DNA的两条多核苷酸链是( )的,两链的碱基顺序( ),其中( )与 T 配对,形成( )个氢键,C 与( )配对,形成( )个氢键。
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举一反三
【单选题】According to the fourth ad, you may ______.
A.
buy a fridge for $500
B.
buy all the old pictures for $140
C.
pay $800 for two armchairs
D.
pay $1,000 for a double bed
【单选题】Which form. other than oral speech would be most commonly used among blind people?
A.
picture signs
B.
signal flags
C.
sign language
D.
Braille
【单选题】An outline is like a blueprint for a speech because().
A.
it allows you to see the picture of your speech at a glance.
B.
it allows you to see the content of your speech at a glance.
C.
it allows you to see the full scope and content of your speech at a glance.
D.
none of the above
【简答题】当传动比i n输入,T输出
【简答题】完形填空。 Look at this picture. This is a photo __1__ my family. There are __2__people in the pictur完形填空。 Look at this picture. This is a photo __ 1 __ my family. There are______ 2 __ people in the pictur...
【单选题】听力原文： People have been painting pictures for at least 30,000 years. The earliest pictures were painted by people who hunted animals. They used to paint pictures of the animals they wanted to catch. Pi...
A.
Because they wanted to record the animals they caught.
B.
Because they wanted to make stories about, animal-hunting.
C.
Because the painters wanted to show imagination.
D.
Because the pictures were thought to be helpful.
【简答题】A(n) ________ paints pictur es
【单选题】Which form. other than oral speech could be most commonly used among blind people?
A.
Picture signs.
B.
Braille.
C.
Body language.
D.
Signal flags.
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【简答题】当传动比i n输入,T输出
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