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【单选题】
质量为20g的子弹，以400m/s的速率沿图示方向射入一原来静止的质量为980g的摆球中，摆线长度不可伸缩。子弹射入后与摆球一起运动的速率为【图片】A.
4m / s
B.
8m / s
C.
2m / s
D.
7m / s
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举一反三
【单选题】Aunt Lucy said , "Dear me", because she was .
A.
angry
B.
surprised
C.
tired
D.
pleased
【简答题】运作,经营(名词):__________________
【简答题】Underline the words in the sentences that the speakers stress. A couple of years ago, I decided that I wanted to work in the hotel industry. So that's why I've been doing a hotel-management course for...
【单选题】Is this question easy?
A.
Very easy.
B.
Neither easy nor difficult.
C.
Very difficult.
【简答题】编程实现建立一个有 n 名学生数据的单向动态链表,并输出。
【单选题】This lesson is that one.
A.
as easier as
B.
more easy than
C.
not so easy as
D.
easy than
【单选题】Aunt lucy said 'dear me ' because she was _.
A.
Angry
B.
Surprised
C.
Tired
D.
Pleased
【单选题】Aunt Lucy said, ‘Dear me, ’ because she was ______ .
A.
angry
B.
Surprised
C.
tired
D.
pleased
【简答题】题目要求:Look back at the text. Find the words and expressions which mean(在文中找到和下面词语相近的英文单词或者词组) stress , call attention to , underline (Paragraph 7)
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