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【简答题】
为使工作在线性放大状态,必须为引入( )反馈。使的电压放大倍数下降,从而使输出与输入呈线性关系。
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举一反三
【简答题】nervou s,speech I when I give a .
【简答题】When people get anxious, they tend to______.
【多选题】现在我们识记辅音,辅音一共28个。上一题复习的元音,元音一共20个。辅音也有分类,比如清辅音、浊辅音、爆破音,不用记分类,会发音、拼读就可以。
A.
/p/ 、/b/、 /t/ 、/d/、 /k/、 /g/ 这是三对、六个辅音-爆破音
B.
/f/、 /v/、 /s/、 /z/、 /ʃ/、 /ʒ/ 、 /θ/、 /ð/ 这是四对、八个辅音- 摩擦音
C.
/tʃ/ 、/dʒ/、 /tr/ 、/dr/、 /ts/、 /dz/ 这是两对、四个辅音-破 擦音
D.
还有8个单独分类的辅音 声门擦音 /h/ 近音 /r/ 鼻音 /m/ /n/ /ŋ/ 舌侧音 /l/ 半元音/w/ /j/ （这一题也是复习题，答案ABCD全选即可）
【单选题】I tend to get nervous when _________ to make a presentation to a large group of people.
A.
being asked
B.
asked
C.
asking
D.
ask
【单选题】Children tend to get() (易怒的) and tearful when they are tired.
A.
instructional
B.
fractional
C.
fractious
D.
afraid
【简答题】In terms of marriage, most people tend to __________． [A] get married after careful consideration [B] be attracted by someone living in an alien land [C] be well-matched in social and economic status ...
【单选题】I tend to get nervous when ( ) to make a presentation to a large group of people.
A.
asking
B.
asked
C.
ask
【单选题】I tend to get nervous when ( ) to make a presentation to a large group of people.
A.
be asked
B.
asked
C.
asking
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