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【单选题】
British people usually ______ the first time they meet. [ ]A.
shake hand
B.
shakes hand
C.
shake hands
D.
shaking hands
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【简答题】14 花青素随OH增多,吸收波长_______移,_______增加,随甲氧基增多吸收波长_______移,_______增加。
【单选题】关于钢筋混凝土梁配筋的说法,正确的是( )。
A.
纵向受拉钢筋应布置在梁的受压区
B.
梁的箍筋主要作用是承担剪力和固定主筋位置
C.
梁的箍筋直径最小可采用4mm
D.
当梁的截面高度小于200mm时，不应设置箍筋
【简答题】花青素随OH增多，吸收波长（）移，（）增加，随甲氧基增多吸收波长（）移，（）增加。
【简答题】听第7段材料，回答第8、9题。 M: I've heard you are going to New York tomorrow. I'd like to see you off to the airport. W: Oh. Thank you. That's very kind of you. M: What time are you leaving for the airport? W: 8:...
【简答题】阅读理解。 Dating can be fun if you are aware(知道)of its pros and cons and are also aware of the ways to protect yourself. There are a couple of suggestions you would like to know before you are out fo...
【单选题】We walked down the stairs____________ taking the elevator.
A.
instead us
B.
instead of
C.
instead
【简答题】完形填空。 There was a boy who was the brightest student in his class. But the boy changed l _ leaving home and living in the school. His grades started dropping and felt worried. He 2_ being with others....
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