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【简答题】
Complete the following dialogue.(选词填空) like juice help thirsty drink bring S: Claire, I’m too tired to walk another step! C: Me too. And I’m also very 1 . Do you want something to 2 ? S: Yes. W: May I 3 you? C: Yes. We’d like fresh 4 . What kind of juice do you have? W: We have orange, pineapple, watermelon, papaya and mango juice. Which one would you like? C: I’d 5 pineapple juice. What about you, Susan? S: Mango juice. W: OK. One pineapple juice and one mango juice. I’ll 6 them to you right now.
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【单选题】Mike said that we'd take our chances . Please choose the meaning for the undelined phrase.
A.
use the chances
B.
take the risk
C.
need the chances
D.
have the chaces
【简答题】齿轮泵是()压泵,叶片泵是()压泵,柱塞泵是()压泵
【多选题】下列关于听阈的说法正确的是()。
A.
刚能引起人耳听觉反应的最大声音刺激量，称为听阈
B.
将各频率的听阈以线段连接，形成听阈曲线
C.
听阈从字面理解，是描述人所听到声音的界限，这个界限表明刚能听到最小声音的能力
D.
并非任何大小的声音都能引起人耳的听觉，必须在声音的强度达到一定的量值时，才能引起人耳的听觉
E.
0-20000Hz声频范围内，能引起人耳听觉的最大声音强度叫做人耳的听阈
【单选题】Our teachers are ___________ about our chances of success.
A.
optimistic
B.
good
C.
hard
D.
confortable
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